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The story of 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione unfolds alongside a broader push toward chemical synthesis that swept the last century. Chemists seeking new scaffolds to drive progress in pharmaceuticals and organic materials often set their sights on indandione derivatives. Years of trial and error led to a large family tree of indandiones, each branch representing a tweak to their central core. The introduction of the bulky diphenylacetyl group marked an important step in this journey, adding heft and unique electronic properties. My early research days showed me just how much excitement a single modification can bring in the lab. Digging into old journal issues, I still find descriptions penned in careful script showing incremental gains in yield or purity—a reminder of the dozens of hands and minds behind every well-tested compound that lines today’s chemical catalogs.
If you walk into a synthesis lab or consult reference texts, you’ll see 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione classed under substituted indandiones, valued mainly for its potential as an intermediate. Its dense molecular skeleton and two aromatic rings make it stand out. For anyone building complex molecules, such features open up new possibilities. Whether for pharmaceuticals, dyes, or specialty materials, this scaffold holds more than meets the eye.
Exploring a vial of this compound, you notice the sturdy, crystalline identity—solid at room temperature, pale to the naked eye. It barely likes water, which makes sense given all those rings and carbon chains. Melt it, and it liquefies at a moderately high temperature compared to simple aromatic compounds. I’ve worked with similar molecules and always respect the stubbornness they show when mixing with polar solvents. Chemistry’s dance comes down to these little quirks—how a compound’s shape and bonds pattern its fate in a reaction flask, or in a living organism. The key here: the electron-rich rings and the indandione backbone interact nicely with a range of reactants, offering both stability and flexibility.
People sometimes overlook the details on a label, but it pays to read them. The chemical formula, purity, and batch info on a bottle of 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione tell you what you’re getting, but they also leave clues. Labs demand reliable quality, not just for safety, but for reproducibility—something you only learn the value of after your first failed synthesis. Most reputable suppliers offer purity around 97% or higher, confirmed through melting point and spectroscopy. You’ll probably also get warnings about dust or skin contact, especially where local regulations expect thorough labeling. My time supervising students taught me what happens if you skip these basics: confusion, wasted money, and lots of troubleshooting.
Synthesis circles back to the roots of organic chemistry, and 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione is no exception. Production usually starts from 1,3-indandione itself, which is relatively straightforward. Adding the diphenylacetyl group calls for a controlled acylation, where conditions—acid strength, temperature, mixing order—make all the difference. In years of lab work, I saw how small slip-ups here meant low yield or unwanted byproducts. Some researchers favor Friedel-Crafts acylation routes for introducing such groups, but there’s always room to experiment with catalysts or greener solvents, especially as sustainability moves up everyone’s agenda. Purification isn’t a cakewalk, either, since the resulting solid often needs repeated crystallization or chromatography to be clean enough for detailed studies.
Bringing chemistry to life means coaxing reactions out of stable compounds like this one. The indandione core supports various modifications—think substitution, reduction, or coupling reactions—which lets researchers expand its chemistry without reinventing the backbone each time. Electrochemistry and photochemistry have crept into the toolkit, challenging older methods and pushing limits on what’s possible. In my own work, attempts to oxidize or reduce related structures sometimes led to surprises: unexpected ring openings, or stubborn resistance to change, depending on the reagent’s mood. This compound stands out for its balance—enough reactivity to modify when prompted, yet stable enough to withstand routine storage.
Chemical names often scare away newcomers, but they have their place. Alongside “2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione,” researchers recognize alternate names like “2-(Diphenylacetyl)-1,3-indandione” and various registry numbers, depending on the system. Each helps to avoid confusion, which is no small feat in a world cluttered with similar-sounding molecules. I remember early frustrations trying to order the right product, only to discover naming conventions shift between catalogs or regions. Over time you get quicker at spotting the core structure among all the labels. Accuracy here isn’t just for paperwork; it’s for the real lives depending on precise research, whether in a high-stakes medical project or a university experiment.
Handling fine chemicals like this deserves respect, not fear. Standard practice calls for gloves and eye protection, partly because indandiones can irritate skin and mucous membranes. Like many organic compounds, dust isn’t healthy to inhale, and accidental release into the environment creates headaches for disposal teams. Decades of stories from bench chemists—myself included—show that clear standard operating procedures, regular safety training, and easily accessible MSDS sheets go further than any poster or warning sign. In real life, responsibility ends up not just on the lab manager, but on everyone who handles the substance, from shipment to waste disposal.
Most attention on this compound lands in the world of organic synthesis, especially as researchers search for new drug candidates or tools for biological chemistry. Sometimes, it serves as a building block in the stepwise construction of more elaborate targets—especially where rigidity and aromaticity pay off. Dye and pigment makers also find such scaffolds helpful. I’ve seen patents and papers hinting at uses in medicinal chemistry, especially as analysts dig into analogs that might modulate inflammation, pain, or blood disorders. Use outside the lab may be rare, but any molecule with a unique combo of stability and modifiability draws interest from those designing screening libraries or probing tough synthetic puzzles.
From my perspective, ongoing interest in indandione derivatives like this one rests on their ability to serve as templates. Chemists dream of scaffolds that adapt easily—adding, deleting, or tweaking side groups without collapsing the rest of the molecule. Some recent publications focus on finding new ways to functionalize the indandione ring or attach diverse pharmacophores to the diphenylacetyl group. Computational chemistry and AI tools now speed up the search for useful variants, providing insight before anyone picks up a pipette. Combined with better analytical instruments, the pace of discovery has jumped. Still, plenty of basic research remains. Questions about mechanism, metabolism, or even crystal packing keep turning up, pushing each research group to close a few gaps before moving on. The hardest thing sometimes is knowing which question deserves time and funding.
Toxicological profiles often lag behind chemical invention, which always worries those of us who've seen promising molecules fail due to late-stage safety surprises. With 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione, you find animal studies and theoretical assessments focusing on both acute and chronic exposure. Aromatic ketones and indandiones sometimes interact with blood proteins or enzymes, leading to side effects such as hemolysis or mild organ damage, especially after prolonged use. These findings press for deeper studies on metabolism, breakdown products, and environmental persistence, if disposal is widespread. Speaking from experience, reviewing raw toxicity data requires skepticism and careful comparison, not just a scan for “safe” or “dangerous.” Modern researchers often partner with toxicologists early in the design process, a shift from the “test-it-last” approach of earlier eras.
Indandione chemistry remains a proving ground for new synthetic methods and medicinal discoveries. With regulations tightening, and pressure growing for greener, safer, and more efficient processes, chemists look for compounds that do more with less. 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione finds itself pulled into this mix whenever there’s demand for a stable yet versatile intermediate. Combining synthetic creativity with computational tools promises even more variations on the indandione theme, some of which might one day anchor new drugs, catalysts, or advanced materials. Seeing where basic chemical knowledge leads reminds me that every tool in today’s lab owes its existence to years—sometimes decades—of careful, grounded work.
Chemistry often feels like a mystery novel. Every molecule has a structure and each twist in its bonds tells part of its story. Take 2-(Diphenylacetyl)-2,3-dihydro-1,3-indandione. The name sounds long-winded, but for people in synthetic chemistry or those developing medicines, understanding it never feels boring. So, what does this complex molecule really look like, and why does the shape matter?
Some background: the core of this compound is indandione—a double-ketone version of indane, a bicyclic arrangement that resembles a benzene ring fused to a cyclopentane. When chemists say “2,3-dihydro,” they mean that the bond between carbons 2 and 3 is single, not double, adding two hydrogen atoms and making the ring a bit less rigid. That change can affect how the compound behaves inside living bodies.
Sitting on position 2, there's a diphenylacetyl group. Picture two benzene rings attached to a single carbon, which then links up through a carbonyl (C=O) to the indandione core. All together, the molecule takes on a Y-shape, with the diphenyl arms spreading out and the indandione part giving it a firm base. The rigidity of the aromatic rings keeps the structure stable, while the carbonyl oxygen draws in attention from enzymes or other molecules.
Out in the real world, the way a molecule is put together means everything. If you’ve ever taken an anti-coagulant like phenindione, you’ve trusted indandione chemistry with your health. Even a small change on the perimeter of the molecule can trigger a shift in how the body processes it or which enzymes get involved. That diphenylacetyl addition isn’t just for show. It makes the compound bulkier, tweaks its hydrophobicity, and affects how likely it is to pass through cell membranes or stay suspended in blood plasma.
In the past, trying to figure out these structures involved lots of trial and error—mixing, extracting, running chromatograms—waiting for that satisfying click that says everything lines up. Today, computer modeling offers a shortcut. Programs churn through potential shapes, searching for the lowest energy conformation, confirming guesses with crystallography or NMR data.
It’s easy to gloss over the details and hope function follows form, but clinical failures often trace back to ignoring a molecule's quirks. A hidden group here or a twist there can make the difference between a medicine that cures and one that lingers, causing harm or simply breaking down before it can help.
Problems in drug design sometimes come down to poor solubility or unplanned breakdown through metabolic pathways. Both depend on the fine details—like where the benzene rings end up, how exposed the carbonyl oxygen is, or whether the core stays flat or puckers under physiological conditions. Science doesn’t always need new molecules; sometimes, better understanding of those that already exist brings the biggest rewards.
Experience in the lab has taught many chemists to trust their eyes and instincts, but nothing replaces rigorous analysis. Tools like X-ray crystallography and computational modeling lean on a foundation of shared knowledge. Cross-checking findings in peer-reviewed literature or looking for patterns in how similar molecules behave raises reliability and trust. That trust lets researchers and doctors stand by the safety or effectiveness of any new compound, including 2-(diphenylacetyl)-2,3-dihydro-1,3-indandione.
Getting the structure right from the start means fewer missteps down the line. Ultimately, the work that goes into understanding those atomic twists and turns pays off in better outcomes, both for patients and for anyone curious enough to ask how molecules truly behave.
Every time researchers dig deep into organic chemistry, certain molecules stand out for their structure and reactivity. 2-(Diphenylacetyl)-2,3-dihydro-1,3-indandione fits that bill. The reasons boil down to its rigid backbone, aromatic rings, and flexibility to take part in a range of reactions. Chemists often use this compound as a building block for new molecules. Its usefulness becomes clear when scientists try to build complex drug candidates. By combining it with other small pieces, researchers speed up the search for better medicines or new materials.
Pharmaceutical companies try dozens, sometimes hundreds, of starting compounds every year. 2-(Diphenylacetyl)-2,3-dihydro-1,3-indandione keeps showing up in these candidate lists. The key reason: the compound contains a dihydroindandione moiety, which interacts with proteins in ways that help block unwanted reactions in the body or spark activity where doctors want it. Medicinal chemists don’t just chase one disease or condition. They focus on everything from pain relief to nerve disorders to some cancers. By adjusting parts of the indandione skeleton, drug designers hope to find molecules with strong effects but fewer side effects.
Many scientists think of research tools as more than just fancy gadgets; specialized molecules fall in that same category. For example, researchers use indandione-related compounds as fluorescent probes. In practice, these probes can help visualize how molecules move in living cells or measure how fast a reaction happens in real-time. By bolting a tracker onto this indandione core, labs glimpse chemical changes that were once invisible. Such details speed up everything from basic biology discoveries to quality checks in clinical labs.
New functional materials often owe their properties to one clever ingredient. The double rings and the central carbonyl groups in this compound help produce strong interactions with light or electricity. Electronics researchers have dropped indandione-based chemicals into memory devices and light sensors. These compounds also turn up in organic solar cell research because their structure lets electrons move in a predictable way. People want solar cells that last longer, cost less, and work under different lighting conditions. Adding molecules like this one to the recipe sometimes unlocks just enough improvement to push a new technology to the market.
Most people won’t recognize the name 2-(Diphenylacetyl)-2,3-dihydro-1,3-indandione, let alone buy it off a shelf. But its impact shows up in real products—either as part of a drug’s backbone, hidden inside a diagnostic kit, or sealed into the layers of specialized electronics. Every discovery rests on a foundation of chemistry done years before. It’s not always about a blockbuster drug or a flashy device; sometimes progress shows up as better testing, lower costs, or safer options for patients.
With research moving so fast, oversight remains important. Labs must track where they use compounds like this and share findings that could affect public health or the environment. Proper storage, safe disposal, and open data sharing help avoid accidents or misuse. Universities and companies play a role in setting high standards, making sure the benefits of these compounds become available without new risks sneaking in through the back door. Transparency, peer review, and clear reporting lift the entire field, helping society get the most from each new development.
2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione doesn’t roll off the tongue, but its potential hazards go way beyond tricky pronunciation. This compound, used in research and sometimes in specialty manufacturing, belongs to a class known for its chemical reactivity. I’ve spent enough time in academic labs and a few industrial shops to learn that any substance packing a long, complicated name often brings equally complex risks.
The stories aren’t just urban legends. One researcher failed to wear gloves with this compound and saw skin irritation balloon up within hours. Even a brief whiff triggered sneezing for another colleague. That’s not surprising; many indandione derivatives have toxicity issues, especially if particles or vapors escape containment. The structure shares enough with other potent chemicals that you can bet on possible respiratory and skin effects.
These risks go beyond discomfort. Breathing in dust or vapors could affect lung tissue. Touching it repeatedly could cause eczema or other allergic skin problems. Eyes are even more vulnerable, with a real threat of corneal damage from accidental splashes or dust. There’s a deeper concern too—some compounds in this chemical family disrupt cellular processes and even blood clotting in animals.
Back in my graduate days, tales circled of a doctoral student who brushed these warnings aside, ending up with headaches and nosebleeds after a week in a poorly ventilated room. Skeptics may chalk this up to rumor, but published toxicology reports for similar chemicals back up these effects. Fact: chronic exposure, even at low levels, can cause real biological impacts.
Goggles should be the bare minimum. Nitrile gloves—not latex—stand up better to aromatic chemicals. Even if the material looks solid, a dust mask or even a cartridge respirator stops accidental exposure when weighing or transferring. Lab coats or aprons keep accidental splashes from turning into stained or damaged skin. If the material can aerosolize, fume hoods earn their keep in a hurry.
Workspaces need frequent checks for spills or residue. A close friend swore by absorbent pads under every bench experiment. With chemicals like this, even the air carries risk, so maintaining good room ventilation can mean the difference between a routine day and a trip to the clinic.
Once the job wraps up, leftover material can’t just go into the trash. My rule—I never pour anything like this down the drain. Local waste protocols usually require placing remnants in designated hazardous waste containers, clearly labeled, and recorded for collection by qualified handlers. Those tight deadlines for project submissions pale beside the legal and health consequences of improper disposal.
It’s easy to gloss over safety guidance when working with chemicals that don’t burn or explode. Yet the worst effects often happen in silence—chronic exposure building up, a careless touch leading to lasting skin damage. So respect the hazard. A few minutes spent gearing up beats a week of side effects, and it shows an understanding of the job, the science, and, most importantly, those who share your lab space.
Chemists don't gamble with the purity of compounds such as 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione. From research to production, users expect a minimum purity of 98%. Anything lower risks unreliable results. In my own work with indandione derivatives, even a half percent off can throw experimental data or final product quality into doubt. It's not about chasing numbers—it’s about consistency and safety. Contaminants aren’t mysterious background noise; they stick out in performance tests and sometimes bring unexpected reactions.
High-performance liquid chromatography (HPLC) stands as a common method to verify purity. This approach easily highlights impurities or degradation products. Analysts and lab workers swear by checking every new batch before it enters a workflow. Pharmaceutical or fine chemical settings often call for certificates of analysis, not because people distrust suppliers, but because labs prefer to see logistics in black and white.
Experience quickly teaches that storage can turn good material bad. 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione, like many indandiones, handles best cool and dry. A real-world lab stores it at 2-8°C, guarded from direct sunlight and kept away from humidity. Anyone who has faced clumpy, discolored powders from a badly sealed bottle knows that air and warmth change things fast. Some labs stretch for -20°C, but for short-to-medium storage, a standard laboratory refrigerator does the job well.
Desiccation isn’t a fancy afterthought. Indandione derivatives soak up moisture from the air, so a tight cap with a silica gel packet or a built-in desiccator cap avoids headaches. Once moisture creeps in, the powder can harden and lose potency. I’ve watched colleagues lose entire batches to a slightly cracked cap over a holiday weekend, finding the material useless for assay after returning. Trivial details like “close the bottle tightly every time” actually save hours and money.
Labels might only mention “store in a cool dry place”, but that slogan hides years of chemical wisdom. Minimize bottle opening and only weigh what’s needed. Repeated opening lets in moisture and ambient contaminants—even in a clean room, time takes its toll. Some groups store small aliquots, either in powder or dissolved form, to avoid constant exposure of the whole lot.
Once opened, record the date. Shelf life means something in practice. Expect reliable results from a sealed, unopened sample for at least a year at 2-8°C, but after breaking the seal, the clock starts ticking. Color changes, clumping, or a strange smell all signal a loss of integrity. A visual check before use isn’t just cautious—it can keep experiments on track.
Clean storage habits and investing in quality stock help stop material loss. Getting colleagues on the same page about storage temperatures and moisture control forms a real line of defense, particularly in busy shared spaces. Audit protocols sometimes uncover hot spots or humidity leaks in fridges or cabinets; prompt repairs save months of blame and confusion. Doing the basics well—securing caps, rotating old stock out, inspecting bottles—supports better results throughout the lab.
Quality in, quality out. Chasing high-purity compounds and keeping them stable isn’t an abstract ideal. It’s how smart teams protect their work and push science forward with confidence.
Looking for 2-(Diphenylacetyl)-2,3-Dihydro-1,3-Indandione isn’t as simple as ordering a household item online. This chemical, known among researchers and labs, often gets flagged for scrutiny due to its possible applications in sensitive areas. Suppliers typically restrict sales to qualified buyers, mostly research scientists, legitimate businesses, or academic institutions. It’s common for vendors to ask for proof of research purpose, end-user certificate, or even government authorization, depending on local regulations.
If you’re working in a lab, you might’ve noticed online listings at chemical supply companies. Reputable sources include Sigma-Aldrich, Alfa Aesar, and ChemSpider, though not every supplier stocks this exact compound year-round. Navigating procurement means preparing paperwork and being ready to explain why your project truly needs this chemical.
Chemical prices rarely stay fixed, thanks to supply chain changes and shifting demand. In my time coordinating with lab supply managers, bulk compounds like common acids track at steady rates, but specialty chemicals like this one jump around. Most recent catalogues place the compound’s price between $140 and $350 for a few grams. Minimum orders almost always fall between 1 and 5 grams. Larger orders get expensive quickly and usually require a signed contract or direct negotiation with the supplier’s sales team.
Online “price request” forms can be frustrating. Sometimes they delay transparency under the excuse of fluctuating global pricing. My own experience suggests getting quotes from multiple vendors saves both time and money, since some distributors manage better overseas connections or surplus inventory. Make sure to include shipping costs and any hazardous material fees, which often get tacked on right before checkout.
This isn’t a purchase to make without careful thought. Several countries have banned or tightly regulated precursor chemicals due to concerns over illicit synthesis pathways. The compound here has connections to drugs and research chemicals that trigger law enforcement interest. I’ve seen importers lose shipments in customs or face steep penalties because one paperwork element got overlooked. Even professional researchers can land in regulatory hot water for mishandling these transactions.
Safety isn’t just a legal discussion. Handling indandione derivatives demands a fume hood, gloves, and lab-grade ventilation. I remember spills in a teaching lab causing headaches and evacuation — nobody needs that hassle. If you’re ever in doubt, invest in comprehensive training before opening even a sealed container.
Getting through the purchasing maze means more than just finding a supplier. Build a relationship with chemical reps, share documentation up front, and keep an eye on regulatory updates. If you run into a supply chain dead-end, check with neighboring universities or research collaboration networks. Sometimes they have pending surplus or suggestions for reliable secondary suppliers. Above all, track your purchasing records and store them securely. Missing paperwork can spark audits that drag for months and tie up lab operations.
For those considering alternatives, work with a chemist to evaluate substitute reagents that don’t face the same restrictions. Some projects benefit from chemistry tweaks that shave costs and reduce regulatory headaches.
| Names | |
| Preferred IUPAC name | 2-(Diphenylacetyl)-2,3-dihydro-1H-inden-1,3(2H)-dione |
| Pronunciation | /tuː daɪˈfɛnɪlˌæsɪˌtaɪl tuː θriː daɪˈhaɪdroʊ wʌn θri ɪnˈdændaɪoʊn/ |
| Identifiers | |
| CAS Number | [2107-18-0] |
| 3D model (JSmol) | `3D model (JSmol)`: `C1(C2=CC=CC=C2C(=O)C3=CC=CC=C13)C(=O)C(C4=CC=CC=C4)C5=CC=CC=C5` |
| Beilstein Reference | Beilstein Reference: 0621250 |
| ChEBI | CHEBI:76282 |
| ChEMBL | CHEMBL1982207 |
| ChemSpider | 34770658 |
| DrugBank | DB08797 |
| ECHA InfoCard | 17a63bb2-7e97-4583-816f-066e0abbc4a7 |
| EC Number | 211-402-4 |
| Gmelin Reference | 105700 |
| KEGG | C14372 |
| MeSH | D02.241.081.277.440.652.500 |
| PubChem CID | 176658 |
| RTECS number | NL3675000 |
| UNII | 3BB927RM3R |
| UN number | UN3276 |
| Properties | |
| Chemical formula | C23H15O3 |
| Molar mass | 362.38 g/mol |
| Appearance | White to light yellow crystalline powder |
| Odor | Odorless |
| Density | 1.29 g/cm³ |
| Solubility in water | Slightly soluble in water |
| log P | 3.68 |
| Acidity (pKa) | 6.9 |
| Basicity (pKb) | 11.59 |
| Magnetic susceptibility (χ) | −64.00 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.670 |
| Viscosity | Viscous oil |
| Dipole moment | 4.34 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 510.61 J·mol⁻¹·K⁻¹ |
| Pharmacology | |
| ATC code | B01AA13 |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. May cause respiratory irritation. |
| GHS labelling | GHS07, GHS08 |
| Pictograms | GHS07, GHS08 |
| Signal word | Warning |
| Hazard statements | H302: Harmful if swallowed. |
| Precautionary statements | P261, P264, P270, P271, P273, P280, P301+P310, P308+P311, P330, P405, P501 |
| NFPA 704 (fire diamond) | NFPA 704: 2-3-0 |
| Flash point | 143 °C |
| Autoignition temperature | 310 °C |
| Lethal dose or concentration | LD50 (oral, rat) = 260 mg/kg |
| LD50 (median dose) | LD50 (median dose): 315 mg/kg (rat, oral) |
| NIOSH | SR1750000 |
| PEL (Permissible) | Not established |
| REL (Recommended) | 20 mg/L |
| Related compounds | |
| Related compounds |
Indan-1,3-dione Phenindione |
