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Diethyl N-Butylmalonate traces its roots back to the early days of malonate chemistry, which grew quickly as researchers hunted for practical compounds that would unlock progress in both synthesis and industry. The late 19th and early 20th centuries saw organic chemists routinely working with malonic acid and its diesters, driven by the versatility these compounds offered in forming carbon-carbon bonds. Around the mid-1900s, as the toolbox of fine chemical synthesis expanded, practical derivatives like diethyl n-butylmalonate emerged. Laboratories found value in plugging alkyl groups onto malonate backbones, making new reagents and intermediates for pharmaceuticals, flavors, and agricultural products. While not a household name, this compound became part of the quiet machinery powering advances in specialty chemicals and drug discovery.
Diethyl N-Butylmalonate stands out as a practical reagent in labs and pilot plants around the world. With a straightforward structure—an n-butyl group attached to the malonic acid skeleton, with two ethyl esters on either side—it offers both chemical stability and a useful launching pad for further transformation. Makers and buyers see it as more than just a shelf chemical; it serves as an intermediate for active pharmaceutical ingredients, fragrant compounds, and specialty pesticides. Chemists appreciate the malonate backbone for its nurturing effect on alpha-carbon chemistry, giving them a solid handhold in building intricate carbon chains or functionalizing molecules for greater complexity.
In the lab, diethyl n-butylmalonate appears as a clear, colorless liquid, free-flowing with a faint, sweet odor that hints at its ester heritage. It weighs in at a molecular mass of about 230 grams per mole. The density rests around 1 g/cm³, making it manageable for pouring and transferring between reaction vessels. Boiling points stretch into the 285-295°C range, a detail chemists pay close attention to during distillations or purification runs. Its solubility swings toward organic solvents such as ethanol, ether, and acetone; water hardly touches it, a trait that helps when separating and isolating products. The chemical stability blocks casual breakdown under normal lab conditions, though the ester bonds await activation in the right synthetic recipe.
Technical grade diethyl n-butylmalonate usually ships at purities higher than 98%. Labels carry the CAS number 609-09-6 and spell out safety data in line with global hazard communication standards. Manufacturers often note the absence of heavy metals and key solvents, meeting demands for clean feedstocks in regulated industries. Drums and bottles bear clear hazard pictograms—corrosive, flammable, or irritant status depending on concentration or regional guidelines. Specifications on pH, color, water content, and assay are tracked batch to batch, with certificates of analysis in tow for each shipment. The procurement process often includes tighter QA reviews as regulatory scrutiny mounts for starting materials in drug synthesis.
Industrial routes to diethyl n-butylmalonate draw on well-trodden chemistry. Producers usually start with diethyl malonate and n-butyl bromide, bringing them together under basic conditions. The sodium salt of diethyl malonate, often prepped in situ with sodium ethoxide or sodium hydride, offers up its active methylene in a classic alkylation step. Reaction vessels bubble with ethanol as the solvent, with the mixture held at moderate temperatures for several hours. After the alkyl group latches on, workup follows: aqueous washes, solvent extractions, and a final distillation deliver the pure ester. Some factories tune the conditions for better yields, swapping bases or tweaking solvents, but the core remains unchanged—a testament to the reliability of nucleophilic substitution in malonate chemistry.
The real magic with diethyl n-butylmalonate starts once it lands in the hands of a resourceful chemist. The molecule's esters open doors to hydrolysis, saponification, and decarboxylation reactions. By simple base-mediated hydrolysis, one can break off the ethyl groups, yielding the acid form and then, with some heating, decarboxylate to form n-butylacetic acid derivatives. Alkylation at the methylene bridge brings chances to tack on other functional groups, expanding the chain or adding complexity with heteroatoms. Reductive manipulation—think hydrogenation—lets researchers reduce or saturate unsaturated partners. Some projects use the malonate unit as a stepping stone in multi-stage syntheses for barbiturates, vitamins, or fragrance ingredients. Each chemical avenue prizes the stable-yet-reactive dichotomy that this compound brings.
Over the years, chemists have tagged diethyl n-butylmalonate with a handful of alternate names, based on systematic conventions and company catalogs alike. Names such as diethyl butylmalonate, malonic acid diethyl n-butyl ester, or even DEBM pop up in technical literature and supplier lists. The CAS registry number 609-09-6 anchors identity amid varying regional vocabularies. Industry reps sometimes abbreviate, especially in order forms or internal documents, but any reputable supplier references all major synonyms for traceability.
Anyone handling diethyl n-butylmalonate reads its safety profile closely. While not overtly hazardous under normal use, it can irritate eyes and skin, and inhaling concentrated vapor brings a headache fast. The most prudent labs run their reactions in a fume hood, gloves and goggles required, lab coats snapped tight. Spills clean up with absorbent materials, tossed in waste bins according to local chemical rules. Flammable liquids storage—far from heat sources or ignition points—ranks high on any checklist. Emergency showers and eye wash stations keep worry at bay. Materials safety data sheets (MSDS) and the Global Harmonized System (GHS) supply necessary warnings and first-aid actions, helping prevent accidents or limit their impact. Smart managers drill staff on proper response, because accidents rush up on even the best teams.
This compound's value flows out to many fields. Pharmaceutical research teams rely on it to build barbiturates, anti-leptics, or specialized amino acids. Agrochemical developers turn to diethyl n-butylmalonate as a starting block for new herbicides and pesticides, usually seeking enhanced selectivity or safety over legacy chemicals. Fine chemicals manufacturers see it as a bridge to flavor and fragrance ingredients, where its carbon backbone gives subtlety and nuance to synthetic aromas. Academic projects often reach for malonate esters in total syntheses, adding complexity or tailoring stereochemistry with every ring closure or functionalization. Custom synthesis outfits buy up volumes, calculating route efficiency and environmental impact, because even gram-scale runs can get pricy or produce troublesome waste if handled poorly.
R&D teams still push the limits of this compound. Structure–activity relationship (SAR) work continues for malonate-based molecules, especially in medicinal chemistry campaigns testing for anti-inflammatory, anticonvulsant, or anticancer potential. Green chemistry groups focus on refining alkylation protocols, questioning every solvent and catalyst choice in the hunt for safer, waste-free syntheses. Hybrid chemistries emerge as teams merge malonate esters with new heterocyclic groups, targeting higher potency in the lab and better shelf stability. Collaborative projects between universities and industry sometimes funnel significant grants into reimagining standard malonate chemistry, pointing toward scalable, low-energy processes, and improved atom economy.
While not acutely toxic in small quantities, diethyl n-butylmalonate’s risks accumulate with chronic or repeated exposure. Animal studies flag irritant properties in skin and eye tests, but large-scale acute toxicity appears modest. Inhalation at higher vapor concentrations can bring headaches or dizziness. Regulatory reviews frequently revisit how the molecule behaves in soil and waterways, given its possible persistence and bioaccumulation in the absence of efficient biodegradation. Downstream users track any shift in toxicological consensus, especially those preparing pharmaceuticals or flavors slated for human consumption. Personal experience suggests that while risk is manageable with standard protocols, overfamiliarity sometimes leads to shortcuts, exposing workers to unnecessary contact or inhalation. Always worth remembering: risk increases with volume and duration, even if a single encounter seems mild.
Looking ahead, innovation can reshape how industry and the lab rely on diethyl n-butylmalonate. Demand from custom synthesis and pharmaceutical manufacture should keep rising, especially as drug discovery pulls on malonate chemistry for new active molecules. Regulatory shifts may tighten reporting and purity demands, forcing suppliers to modernize QA systems and increase transparency on trace contaminants. Greener synthesis routes, using catalytic or solvent-free methods, stand to cut operational costs and environmental demand—a win for both profit margins and public health. Advances in automation or continuous flow chemistry might make alkylation and hydrolysis operations cheaper and safer, whittling down labor cost and exposure incidents. Persistent questions about long-term toxicity or environmental fate require ongoing collaboration between researchers, manufacturers, and regulators, so that new uses don’t outpace our understanding of risk. Real progress will come from groups willing to push into cleaner, more efficient ways of making and using this trusted old compound.
Chemists often call upon certain compounds when building more complex molecules. Diethyl N-Butylmalonate stands out in this category. With its unique structure, it serves as an ingredient in the preparation of pharmaceuticals, agrochemicals, and specialty chemicals. Synthesis rarely goes in a straight line, and this compound provides flexibility for researchers as they explore new ideas or optimize older formulas.
Anytime a new drug hits the market, chances are high that multiple smaller molecules combined to bring it about. Diethyl N-Butylmalonate is frequently used in the lab when making intermediates for medicines that treat heart disease, microbial infections, and certain neurological disorders. Using this compound, chemists can add carboxylic acid groups in controlled ways. It acts as a springboard, allowing safe, repeatable transformation into active pharmaceutical ingredients. According to peer-reviewed journals, malonate derivatives continue to help drive innovation in drug discovery, as they lead to less toxic, more effective treatments.
Beyond medicine, Diethyl N-Butylmalonate pops up in agriculture. Teams working on crop protection products have used it when developing new pesticides and herbicides. The structure of malonate esters makes them valuable for tweaking the effectiveness or safety profile of a chemical. Because much of the food supply relies on steady, efficient farming, access to effective and safer pesticides proves vital. Careful use of building-block molecules like Diethyl N-Butylmalonate means farmers stand a better chance against pests and disease, all while staying inside the safety margins regulators demand.
Consistency makes or breaks research, especially when scale-up moves from lab to factory. Diethyl N-Butylmalonate delivers just that: its stability at room temperature and compatibility with common reagents grant researchers more room for error and experimentation. For someone who has spent long hours trying to separate unwanted byproducts from a final product, the value in reliable, predictable intermediates is clear. According to the European Chemicals Agency, its safe handling profile helps keep working environments safer as well, provided appropriate protocols get followed.
Every field connected to chemistry faces pressure to cut down on waste and adopt more sustainable processes. Diethyl N-Butylmalonate can support these changes. In my own academic work, switching to malonate esters in certain syntheses led to cleaner reactions and made solvent recovery much easier. Manufacturers also prefer molecules that break down or convert cleanly, producing fewer pollutants. As academic and industrial labs find ways to reuse byproducts and develop greener protocols, compounds with a reputation for clean chemistry gain even more value.
Full transparency around sourcing, purity, and hazards plays a major role in keeping this compound useful and safe. Researchers benefit from straightforward labeling, regular updates from suppliers, and open communication around any handling risks. As regulations continue to evolve, regular safety training and new best practices keep both workers and the environment protected.
Continuous investment in low-impact synthesis methods, combined with broad collaboration between academia and industry, can keep compounds like Diethyl N-Butylmalonate accessible. Streamlining certain processes not only lowers costs but also brings products to market faster—a win-win in an age where both efficiency and responsibility matter.
Each molecule tells a kind of story. Back in the chemistry lab at college, test tubes lined the benches, every solution bubbling up with new possibilities. Sometimes synthesis seemed mysterious, but structures like diethyl N-butylmalonate soon made sense with a little focus — once you looked past the name. This molecule has a backbone built for both utility and intrigue: diethyl malonate forms the base, with an n-butyl group hanging on. Here's what that really means.
Long chemical names often throw people off, but their logic underpins everything in real-life lab work. "Diethyl" means two ethyl groups have taken the place of acidic hydrogens in malonic acid. "N-butyl" shows a regular four-carbon chain, stretched out and attached at the nitrogen spot on the molecule. The core — malonate — comes from malonic acid, well known for its two carboxylate groups (COOEt esters in this case), making it a favorite building block in organic chemistry.
Ignore the textbook jargon for a second — imagine a familiar shape. The central carbon holds a hydrogen and links to two ester groups, both wrapped up in ethyl chains. One more carbon, now with its four-carbon straight chain, connects to the nitrogen on this molecule, which pulls everything together. The overall arrangement: the skeletal formula runs with CO2Et on either side of a core, with the n-butyl group extending out. The structure gives flexibility for further chemical reactions, which makes it a workhorse for pharmacists or synthesis chemists.
In the pharmacy world and in research chemistry, structure often decides a molecule’s future. Diethyl N-butylmalonate isn't just a curiosity — it plays a part in creating medicines, flavors, and even agricultural chemicals. Its backbone lets it slip into multi-step reactions, adding stability and new attachments at predictable spots. People depend on expert understanding so that these chemicals remain safe, reliable, and scalable.
Safety starts with understanding: with a clear structure, a chemist knows how this compound acts when exposed to acids, bases, or even air. Regulatory bodies around the world rely on clear documentation of such molecules, making sure any health applications fall in line with guidelines. Consumers benefit from trust — and regular audits, robust safety sheets, and checked supply chains back up that trust.
If research teams or manufacturers cut corners on purity or labeling, all the fancy structure diagrams in the world wouldn't matter. Strict attention to chemical sourcing and trustworthy synthesis keeps both labs and end-users safe. More investment in modern analytical techniques, better staff training, and digital transparency in chemical supply lines all help assure both reliability and consumer protection.
As chemistry keeps moving, insights about molecules like diethyl N-butylmalonate keep evolving. Open forums, peer-reviewed journals, and industry panels encourage sharing real-world data. Personal experience in the lab often leads to improvements in synthesis or cleanup, and those stories push the standards higher for everyone, from university researchers to people relying on new medications.
Years of working in labs have a way of teaching respect for even the seemingly “simple” chemicals. Diethyl N-Butylmalonate falls into the category of colorless liquids that draw little attention until a storage issue shows up. This isn’t a substance you find on the news, but safe handling makes a world of difference for researchers, teachers, and workers involved with it. Families and businesses can face more than just a minor accident if toxic vapors or spoiled material get into the open. Storage questions have real stakes—health, safety, and the investment behind every bottle.
Anyone who’s uncorked an old bottle of malonate knows the smell drifts pretty fast—the first warning to take the container to a well-ventilated space. Diethyl N-Butylmalonate asks for the sort of respect given to volatile organics. Warm rooms, open sunlight, or crowded storerooms cause pressure changes and risk of leaks. Keeping it away from heat avoids gradual breakdown and the release of vapors that irritate lungs and eyes. Storing it at room temperature—out of direct sunlight—works well for most situations, and steady temperatures mean fewer surprises. Some labs tuck flammables into dedicated cabinets with automatic door closers, and for good reason. One spark near vented fumes can trigger more than just a scare.
Dampness shortens the shelf life of diethyl N-butylmalonate. Moisture leaking into containers—especially those with worn-out seals—starts off a slow but steady decomposition. This not only produces odd odors and discoloration, but in the worst-case scenario, it ruins entire batches. Chemical producers have seen cases where users thought a reagent would last the year—then humidity crept in, costing thousands in spoiled stock. Storing bottles upright, tightening caps, and using desiccators in damp climates can cut down losses.
Anyone who works with esters like diethyl N-butylmalonate knows certain chemicals play badly together. Strong acids, bases, and oxidizers can trigger unwanted reactions—even fires—in a shared storage area. Mixing storage for convenience saves no one from the cost of a ruined experiment or worse, a panicked evacuation. Assigning shelves or entire cabinets by hazard class isn’t overkill. It’s what keeps colleagues safe, and it’s what insurance policies often demand. Inventory management, regular labeling, and quick spill responses will always work better than shortcuts that risk whole inventories.
No one likes to discover a sticky, faded label at a crucial moment. Clear, updated labeling—including date received and who opened the bottle—prevents confusion, double-handling, and accidents. Too many near-misses happen because someone guessed what was inside. Relying on memory or shortcuts puts everyone at risk. Routine checks, record-keeping, and periodic audits cut down on expired materials piling up unnoticed and help with timely disposals.
Good storage practices protect more than just a line on a budget—they build trust and reliability for everyone involved. Staff deserve more than training-on-paper; real walkthroughs, easy-to-find safety gear, and open communication lead to sustainable habits. Valuing prevention saves money over the long run, and demonstrates commitment to safety beyond the bare minimum. Diethyl N-Butylmalonate reminds us that careful stewardship is the backbone of every successful operation—and for anyone working with chemicals, doing things right the first time saves headaches down the road.
Not everybody’s heard of diethyl n-butylmalonate. At first glance, it sounds like just another mouthful from a chemistry textbook. Yet, this is a chemical that can end up in laboratories, chemical manufacturing sites, and research spaces. In those spaces, the question of hazard and toxicity can’t just get brushed aside. Safety isn’t paperwork — it’s about protecting those who handle the stuff in real life.
Toxicity isn’t just a label scientists toss around. To most people, it means: will this substance hurt me if I breathe it in, touch it, or accidentally swallow a bit of it? I’ve spent enough hours in labs to learn that almost any organic chemical brings some risk. Diethyl n-butylmalonate doesn’t show up as a household substance, so most info comes from industrial settings and chemical suppliers. In those circles, the Safety Data Sheets (SDS) describe the likely effects. Skin contact can cause irritation. Eye exposure stings. Inhaling too much of the vapor may lead to discomfort or dizziness. It’s not viewed on the same level as well-known poisons, yet nobody recommends being careless with it.
Research and chemical safety authorities often classify this sort of chemical as harmful if swallowed — not in the acute deadly sense, but plenty strong enough to demand gloves, goggles, and common sense. Like most esters, it can act as a mild irritant and produce unpleasant symptoms before reaching any severe toxicity plateau.
A lot of safety in chemistry comes down to the controls people set up. Fume hoods, lab coats, face shields — these all exist for days when chemicals splash or spills pop up. In my experience, seeing one person cut corners can put a whole group at risk. Mixing up bottles, skipping hand-washing, or not checking a label can turn a based-on-paper risk into a real emergency. For diethyl n-butylmalonate, ventilation stays top of mind. The vapors aren’t pleasant, and in a small room, you’d notice your eyes watering pretty fast.
One big roadblock with less-common chemicals is the lack of deep-dive toxicity studies. Regulatory agencies, like the EPA or ECHA in Europe, keep tabs on new research. They flag substances that build up in the body, cause cancer, or harm the environment. Diethyl n-butylmalonate hasn’t triggered red flags like that so far, but the absence of harsh warnings doesn’t mean the coast is clear. Responsible companies update their protocols as data accumulates. This openness makes it easier for workers and researchers to make smart choices, asking for new gloves or respirators if the evidence calls for it.
People working with unfamiliar chemicals pick up lessons fast. Training, labeled containers, and regular safety drills offer the best protection. If a new study arrives showing higher toxicity for a compound, companies can swap it out, adjust ventilation, or boost personal protection. I’ve seen neighbors in one lab quit using a solvent after an updated risk assessment changed their minds. Staying alert instead of taking comfort in a “historically safe” label helps prevent surprises.
Staying informed about the hazards of diethyl n-butylmalonate means more than memorizing facts — it means keeping safety a habit and raising questions whenever doubt pops up.In any lab or production setting, purity carries a weight that goes far beyond a marketing label. A chemical like diethyl n-butylmalonate impacts all downstream processes—an impurity, even a minor one, can lead to skewed reactions, wasted materials, or worse, faulty product batches. A company supplying this intermediate typically reports a purity level of 98% or above. This isn’t just a number on a spec sheet; it reflects the supplier’s techniques and commitment to quality.
Years spent troubleshooting hiccups in custom synthesis have made me a bit of a stickler for analytical data. In pharmaceutical development, for instance, slight contaminants in raw materials like diethyl n-butylmalonate slow reaction rates or introduce unknown byproducts. Researchers usually request certificates of analysis before even signing off on a purchase. If the lab’s instruments pick up peaks outside the expected range, the batch gets flagged. That kind of diligence isn’t wasted effort—it saves time, money, and regulatory headaches down the road.
An offered standard of 98% purity (by GC) almost always means the product arrived clean enough for straightforward organic syntheses, esters, and malonic derivatives. Reports show that industries using it for further transformations—such as making specialty molecules or agrochemical agents—want that number as high as possible. Subpar material triggers extra purification steps, which will eat up both budget and motivation.
The difference between 95% and 99% may not sound dramatic, but for many protocols, it’s all the difference in the world. Lower purity batches often contain residual solvents or related esters, and these “minor” components alter yields and might even affect end-point safety. Every shortcut taken at the sourcing stage will have to be paid back later—often with interest—in the lab.
Analytical techniques matter just as much as the number itself. Suppliers who willingly share chromatograms and explain their testing method show a real understanding of what customers face. Transparency builds trust, and trust is hard-won in an industry still stung by supply-chain scandals and inconsistent global regulation.
Price wars in the global chemical market sometimes tempt buyers to settle for lower grades, especially during supply crunches. That gamble rarely pays off, as the time lost handling subpar batches can dwarf any upfront savings. Having reviewed countless supplier specs, it’s always clear who puts in the effort—a reliable partner doesn’t dodge questions about trace metal content, water levels, or batch-to-batch consistency.
Customers benefit from open dialogue with vendors. Asking for sample analysis or site audits is no longer unusual. Businesses that take the time to learn the precise needs of their customers—and communicate openly about what goes into meeting them—find themselves with better, longer-lasting customer relationships.
Organizations looking to avoid trouble down the line need to factor more than price into procurement decisions. Quality control practices, clear communication, and a proven record with high-purity diethyl n-butylmalonate ultimately set outstanding suppliers apart from the rest. Those who balance technical know-how and honest business practices tend to become the go-to choice whenever reliability is on the line.
Years of science and process work have shown that higher purity means fewer surprises. Whether for large-scale manufacturing or R&D, demanding clean, well-documented chemicals is less about following rules and more about making work easier, safer, and far more successful.
| Names | |
| Preferred IUPAC name | Diethyl 2-butylpropanedioate |
| Other names |
Diethyl butylmalonate Butylmalonic acid diethyl ester |
| Pronunciation | /daɪˈɛθɪl ɛn ˈbjuːtɪl məˈloʊneɪt/ |
| Identifiers | |
| CAS Number | 609-08-5 |
| Beilstein Reference | 1208735 |
| ChEBI | CHEBI:131761 |
| ChEMBL | CHEMBL255256 |
| ChemSpider | 14498 |
| DrugBank | DB02130 |
| ECHA InfoCard | 100.009.257 |
| EC Number | 211-193-8 |
| Gmelin Reference | 10222 |
| KEGG | C04336 |
| MeSH | D02.241.223.211.180.150 |
| PubChem CID | 68980 |
| RTECS number | UR8225000 |
| UNII | 0006AC7F3R |
| UN number | UN1993 |
| CompTox Dashboard (EPA) | DTXSID90630505 |
| Properties | |
| Chemical formula | C11H20O4 |
| Molar mass | 216.29 g/mol |
| Appearance | Colorless to light yellow liquid |
| Odor | Odorless |
| Density | 1.01 g/cm³ |
| Solubility in water | insoluble |
| log P | 0.96 |
| Vapor pressure | 0.04 mmHg (25°C) |
| Acidity (pKa) | pKa ≈ 13.1 |
| Basicity (pKb) | 12.6 |
| Magnetic susceptibility (χ) | -52.97·10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.4210 |
| Viscosity | Viscosity: 2.12 mPa·s (20 °C) |
| Dipole moment | 2.96 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 576.7 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -571.2 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -3662.8 kJ/mol |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. May cause respiratory irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. |
| Precautionary statements | Precautionary statements: "P280, P305+P351+P338, P337+P313 |
| NFPA 704 (fire diamond) | 1-2-0 |
| Flash point | 74 °C |
| Autoignition temperature | 230 °C |
| Lethal dose or concentration | Lethal Dose (LD50, oral, rat): 16200 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral-rat LD50: 4100 mg/kg |
| NIOSH | PB4025000 |
| PEL (Permissible) | Not established |
| REL (Recommended) | 0.5 – 1.0 mg/L |
| Related compounds | |
| Related compounds |
Diethyl malonate Diethyl ethylmalonate Diethyl methylmalonate Diethyl isopropylmalonate Diethyl benzylmalonate Diethyl acetamidomalonate |
