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3-Methyl-6-Methoxyaniline: An Editorial Look at a Specialty Aromatic Amine

Historical Development

Aromatic amines trace their story back to the explosive growth of dye chemistry in the nineteenth century. 3-Methyl-6-Methoxyaniline didn’t steal the limelight from the big players like aniline or toluidine, but it faded in gradually, riding on the wave of structural exploration. Organic chemistry has long thrived on the tweaking of functional groups, and this compound grew out of a fascination for what certain substitutions—here, a methyl and a methoxy group—could bring to an aniline backbone. Academic synthesis in the mid-1900s led to gradual adoption in specialized labs, as researchers dug into structure-activity relationships for new drugs, dyes, and intermediates. It is fair to say that the world learned the strengths of 3-methyl-6-methoxyaniline in niches where small tweaks made big differences.

Product Overview

3-Methyl-6-methoxyaniline can seem like just another point on the long list of aromatic compounds, but it carries specific characteristics that set it apart. As a substituted aniline, it stands out in laboratories developing new chemical entities. Whether for targeted pharmaceutical intermediates or unique dyes, the blend of methyl and methoxy groups on the ring structure nudges reactivity, solubility, and downstream modification chances into a different lane. When I spent time in a dye chemistry lab, minor differences in starting amines changed the whole set of colors and fastness properties, and this molecule reminds me that purpose-driven chemicals—though obscure to some—matter a great deal when reliability and predictability drive value.

Physical & Chemical Properties

Colorless to pale yellow, 3-methyl-6-methoxyaniline usually arrives as an oily liquid at room temperature. Moderately soluble in ethanol and organic solvents, it takes on a characteristic amine smell that lingers. The presence of the methoxy group at the sixth carbon and the methyl group at the third position alters electronic and steric factors, making the compound less reactive than unsubstituted aniline toward electrophilic aromatic substitution. Its melting and boiling points tend to land a bit higher than typical simple anilines, giving it some process utility for tasks that require a balance of reactivity and stability. Anyone who’s worked with amines knows the dance of keeping purity high; handling this compound brings back memories of column setups and hours watching fractions elute just right.

Technical Specifications & Labeling

Chemical suppliers categorize 3-methyl-6-methoxyaniline under standard purity grades suitable for research and chemical manufacturing. Its label carries identification numbers and hazard warnings more for its toxicological properties than any combustibility. The IUPAC name gives away the substitution pattern: 3-methyl-6-methoxyaniline. Synonym listings sometimes mention m-methyl-o-methoxyaniline. Lab operators—especially those mixing batches for reaction screens—spot the nuances from the chemical structure on the label before thinking about any code or barcode.

Preparation Method

Preparation usually involves selective methylation and methoxylation on an aniline framework. Lab synthesis might start from 3-methylanisole, which undergoes nitration, reduction, and subsequent separation to get the desired isomer. Each step adds opportunity for side reactions, so solid isolation and purification techniques come into play. In scale-up settings, getting the right isomers without excess waste remains the key challenge. I remember the scent of solvents and the struggle to dry out traces of acids after quenching a reduction of nitro arenes; anyone making a living with aromatic compounds knows such details can make or break an entire run.

Chemical Reactions & Modifications

The dialkyl substitution pattern alters the nucleophilicity of the amine group, which impacts both the kind of derivatization possible and the reactivity towards various electrophiles. For instance, acylation gives selective products, and the electron-donating methoxy group pushes the ring toward certain orientation in substitutions. In the labs I’ve worked in, this enabled cleaner synthesis of drug intermediates. This is not a simple “add and forget” molecule; subtle placement of groups can unlock or shut down whole classes of reactions. Chemists often exploit this feature to design smarter, more efficient manufacturing routes for specialty products.

Synonyms & Product Names

Depending on who supplies it and the database consulted, 3-methyl-6-methoxyaniline will show up as m-methyl-o-methoxyaniline or with similar trade labels. CAS number searches avoid confusion, but synonyms appear in patents and scientific reports regularly. For a chemist trying to shop for it or track regulatory documents, knowing alternate names helps avoid misordering or mishandling. I’ve seen more than one project hit a wall when an order arrived under the wrong synonym, a frustrating error easily avoided with cross-checking.

Safety & Operational Standards

Toxicology casts a long shadow over many anilines and their derivatives, and this molecule raises similar banners for careful use. Skin and respiratory exposure bring health risks, with standard recommendations for gloves, goggles, and ventilation. Storage calls for sealed containers and minimal exposure to open air; like all aromatic amines, oxidation can impact purity and, in rare cases, generate hazardous byproducts. Having handled similar substituted anilines myself, I can say that sniffing the fumes even briefly leaves a bitter aftertaste, and vigilance keeps incidents rare. Laboratories and factories rely on a culture of safety, rigorous training, and clear labeling to keep both people and product in good shape.

Application Area

Research teams and specialty manufacturers use 3-methyl-6-methoxyaniline largely as an intermediate. In pharmaceutical synthesis, slight tweaks to the ring structure often deliver selectivity or efficacy in drug candidates. Its presence in dye manufacturing helps expand the color palette or shift fastness. Specialty polymers or advanced materials sometimes begin with a substituted aniline. The impact often flies beneath the public radar but matters deeply for innovation inside the walls of research-driven companies. In my experience, academic collaborations sometimes hinge on having the right intermediate at the right time, and missing access to reliable molecules like this can freeze early proof-of-concept work.

Research & Development

Every new batch of compounds—especially in pharmaceuticals and advanced materials—kicks off questions about which substitutions pay off. Researchers work through rows of test tubes, swapping groups on rings until a compound clicks. 3-methyl-6-methoxyaniline delivers more than just a spot on a spectral chart; it impacts solubility, metabolism, and product development in real, measurable ways. That dance between minor molecular changes and big downstream effects keeps chemists tinkering and drives biotech progress. Chemists and biologists together chase the potential from this and similar molecules, hoping to bring something meaningful out the other end.

Toxicity Research

Toxicologists dig deep with substituted anilines, knowing that each new grouping changes absorption, bioactivity, and breakdown paths. Animal and cell studies test these compounds for carcinogenic potential and organ toxicity. Regulatory agencies rely on research to set exposure limits, flagging concerns early. Chemists working hands-on, like myself, learn quickly to respect any new amine’s potential for harm. Safety reviews—both published and internal—set out protocols for controlled use but drive ongoing demands for data. As industry demand shifts or grows, regulatory authorities look for more robust, transparent evidence, so researchers stay busy logging new toxicity metrics.

Future Prospects

Demand for custom intermediates stretches further into pharma and materials as projects explore new territories. 3-methyl-6-methoxyaniline holds promise where standard building blocks no longer suffice. As green chemistry matures, scaling synthesis with less waste and lower energy gets more attention. Industries want molecules with special performance features, which brings this kind of specialty compound into sharper focus. I have watched a wave of startups look past obvious choices and work with complex intermediates that once felt too narrow for scale. The journey for 3-methyl-6-methoxyaniline hasn’t ended—it keeps evolving, quietly powering more of the innovations that shape medicines, materials, and the products that follow.




What is the chemical formula of 3-Methyl-6-Methoxyaniline?

Piecing Together the Chemical Puzzle

Getting to the chemical formula of 3-Methyl-6-Methoxyaniline means understanding both the naming conventions and what each part adds to a benzene ring. Let’s break it down. The base structure is aniline, which is a benzene ring with an amino group (–NH2). The “3-methyl” part puts a methyl (–CH3) group on the third carbon, and “6-methoxy” attaches an –OCH3 group to the sixth carbon. Arranged on the benzene core, the chemical formula turns out to be C8H11NO.

Beyond the Formula: Why It Matters

It’s easy to see formulas as something for textbooks, but these small changes in structure can change how a molecule acts. The methyl and methoxy groups shift the properties compared to plain aniline—making a difference in electron density and reactivity. Industries banking on dyes, pharmaceuticals, or advanced polymers pay close attention to these tweaks because customer safety and performance hang in the balance. Even a single methyl group can make a compound safer or more hazardous.

Impacts in Everyday Chemistry

I’ve worked in a university lab where we used methoxy group substitutions to adjust solubility and reactivity in organic syntheses. The goal? Produce a better intermediate for pain medications. That single methoxy twist did wonders for the final yield. People outside the field might overlook these details, but the difference shows up in shelf life, product performance, environmental breakdown, and even regulatory handling.

Safety and Environmental Perspectives

It’s not just about getting the formula right. Health agencies such as the European Chemicals Agency and OSHA track substances like methyl-methoxyanilines because exposure can cause skin and eye irritation and, in some cases, impact liver function. Handling safety data sheets and learning proper storage and labeling can prevent lab accidents. The emissions from factories using derivatives of aniline don’t stop at the facility fence. Community health risks stay real if runoff and leaks make their way into water supplies. Monitoring and containment systems catch these leaks early, but only if companies keep up with routine checks and invest in sensor systems.

Science Education and Knowledge Transfer

Every step of research and industrial work with compounds like 3-Methyl-6-Methoxyaniline leans on solid education. Getting familiar with chemical naming, learning how substituents shift outcomes, and being able to draw structure from formula—all these basics help students transfer knowledge from the classroom to real-world problem-solving. Educational tools like ChemDraw and 3D molecular modeling now make it easier for high schoolers to see what’s happening at the molecular level, building a more safety-conscious and skilled workforce.

Getting Safer and Smarter Moving Forward

Accurate chemical information and a clear understanding of molecular structure aren’t just for scientists. Knowing how substituents affect toxicity leads to smarter regulations and promotes safer workspaces. Manufacturers can lower risks by switching to less hazardous alternatives when a functional property remains unchanged. Regulators and companies both benefit by open sharing of data, transparent chemical sourcing, and investment in green chemistry research. These choices ripple forward, shaping not only what products arrive on shelves but how safe those products are for workers, consumers, and the environment.

What are the primary uses or applications of 3-Methyl-6-Methoxyaniline?

Chemicals Aren’t Always a Mystery

Stepping into the practical world of industrial chemistry, some names don’t roll off the tongue—3-Methyl-6-Methoxyaniline definitely doesn’t—but that doesn’t mean they don’t pull their weight. With a simple structure, it becomes the backbone of several chemical processes. I’ve seen the way specialized amines like this shift outcomes in both small labs and production settings, changing how things are built from the bottom up.

Dyes that Shape Everyday Life

A lot more color surrounds you than most notice. This molecule plays a starring role in building certain dyes. Spend time in textile factories, and you start to pay attention to how colors don’t just appear out of nowhere. Chemists rely on anilines, especially derivatives like this, to create vibrant and long-lasting shades. Solvent dyes, which go into plastics, inks, or even some special paints, show stability and tone because of tweaks involving this compound.

It’s not just about making things pretty, either. Many processes in dye manufacturing demand precision; a small adjustment in molecular structure means better resistance to fading or better environmental safety down the line. Tools like 3-Methyl-6-Methoxyaniline make that engineering possible. Some of these dyes end up on store shelves, some sneak into industrial products nobody thinks about—either way, they wouldn’t exist without this ingredient.

Intermediates Set the Stage

Building a great product often means taking small, calculated steps. In the synthesis of pharmaceuticals, this compound serves as one of those steps. Visit any pharmaceutical R&D lab, and you’ll see the shelves lined with intermediates ready to be transformed into final products. This is one of those utility players, helping link together molecular fragments in search of the right drug candidate.

Some antihistamines, certain antipsychotics, and rare specialty chemicals have all passed through a reaction involving this aniline at some stage. It’s easy to lose sight of such compounds when you pick up medicine from a pharmacy, but without those critical links in an often invisible chain, the pill never makes it to your hand.

Not Just for Factories

The reach of these chemicals doesn’t always stick to the chemical plant. A few research labs still use these compounds for studying new reactions. Thin films with experimental semiconductors, some agrochemicals, even an occasional new material with optical effects—testing isn’t limited by industry pressure, so new uses do crop up, slow and steady.

Talking Safety and Smart Use

Every industrial process comes with its dark side. Experience shows safety matters more than most realize. Handling 3-Methyl-6-Methoxyaniline calls for gear and protocols. Inspections and regular reviews never feel fun, but plenty of people owe their health to them. Studies tracking chemical exposure link certain anilines to long-term harm, so cutting corners is a bad bet, no matter the deadline. Waste also needs tight management, because these compounds don’t play nice with groundwater.

Pushing for Better Outcomes

Newer regulations press for improved worker protection and better waste handling. Some facilities experiment with greener routes or swap problematic chemicals for less hazardous ones when possible. Investing in better containment gear and real-time sensors on the floor always brings more peace of mind than any clever shortcut. In the rush to invent or produce, it’s important not to lose sight of what matters most: people and the planet.

What safety precautions should be taken when handling 3-Methyl-6-Methoxyaniline?

Why Pay Attention to Chemical Safety?

There’s a reason chemists in labs don’t just grab bottles off the shelf with bare hands. 3-Methyl-6-Methoxyaniline may sound obscure, but handling any aromatic amine brings risks that can sneak up on even the most careful worker. I remember my first months in a research lab, trusting the label warnings because a more experienced tech showed damage from a splash gone wrong. Accidents stay with you, and precautions aren’t just rules for newcomers — they’re what keep hands, lungs, and reputations intact.

Personal Protective Equipment Comes First

No one wants a chemical burn for a keepsake. Nitrile gloves work well against aromatic amines. Double-layer when handling bigger volumes. Choose goggles with side shields instead of basic safety glasses; anything volatile and aromatic can sting eyes before you even notice it drifting. Lab coats matter, especially ones that fit tightly at the cuffs. I still wear an old, scorched coat as a reminder — loose sleeves give chemicals a way in.

Ventilation: Not Optional

3-Methyl-6-Methoxyaniline can get volatile at moderate temperatures. Breathing it in is a shortcut to headaches and worse, so hoods become your best friend. Fume hoods, checked with airflow indicators, protect lungs far better than just cracking a window. In my experience, even the best air conditioning system in a research building never really replaces a hood.

Skin and Eye Protection

Once, I watched a colleague rinse a small drop off their wrist. They thought water alone was enough, but skin exposure demands a fifteen-minute scrub. This isn’t being fussy — some amine compounds slip through the skin and cause toxic symptoms hours later. Having an eyewash station and knowing exactly where it sits means no wasted seconds if you need it.

Spill and Waste Protocols

Every container deserves respect. Use spill trays under bottles, especially for anything larger than a gram scale project. Absorbent pads and sand keep a mess from spreading, and neutralizing agents reduce harm, but always read the lab’s chemical safety data sheet for what works with aromatic amines. Don’t wait to practice those steps. The only bad spill is the one you weren’t ready for.

Storage Matters

Storing this compound in a cool place beats dealing with a vapor cloud later. Keep it in tightly sealed bottles, away from acids or oxidizers. Labels need to be legible and up-to-date. Anything left for a future project should go in secondary containment, inside a ventilated cabinet. I learned early that sharing storage space with incompatible chemicals is a recipe for disaster.

Proper Handling and Training

Rushing through measurements doesn’t just risk your own safety, it puts coworkers at risk. I’ve seen seasoned chemists spill solutions because they skipped using a pipette bulb or didn’t weigh powder in a weighing boat. Staff training, refreshers, and real equipment demonstrations set people up to do things right, from day one through retirement.

Solutions and Continuous Improvement

The best labs revisit protocol after small incidents, not just big ones. A short meeting to talk through mistakes makes a huge difference in how people remember safety rules. Technology, like splash shields and improved gloves, keeps shifting the baseline. Creating a culture where people look out for each other, not just themselves, leads to fewer accidents and more trust on the bench.

Chemical safety isn’t just a box to check — it’s the difference between a successful experiment and a lifelong injury. Thoughtful practices and honest conversations save time, money, and health, every single day.

What is the CAS number for 3-Methyl-6-Methoxyaniline?

Looking Beyond Digits in Chemistry

People in laboratories, factories, and regulatory halls often talk numbers, not because they lack words, but because precision runs the show. The CAS number for 3-Methyl-6-Methoxyaniline is 32721-05-2. Now, that might just sound like another set of digits, unless you’ve ever tried to track a chemical across international guidelines, customs slips, or safety sheets. This identifier carries weight because it cuts through confusion like a sharp blade — there’s no mistaking one chemical for another once you have the correct CAS number.

Why Having the Right Tag Matters

I once worked in a research group handling aromatic amines. The stash included dozens of compounds with similar names and structures. Picking the wrong bottle could mean trashing hours of careful work, or worse, risking health. This is the sort of scenario that keeps safety officers up at night. In regulated industries, the CAS number for 3-Methyl-6-Methoxyaniline spells out exactly what’s inside that container. Any wrong turn on paperwork or order forms could result in delays, recalls, or audits by the authorities.

Health, Safety, and Trust

Searching the CAS number lands people straight on the information highway — hazard statements, solubility, boiling point, handling protocols. For this compound, considered an amine, knowing its biological activity matters. Exposure to aromatic amines sometimes links with health risks. Accurate tracking means risks get managed, not multiplied. Workers depend on this information to do their jobs right. A misplaced digit, and everything spirals: from environmental checks to medical documentation.

Science in the Real World

Many chemical companies build their systems around CAS numbers. I’ve seen procurement teams cross-reference hundreds of suppliers, using nothing but these numbers to get proper quotes and avoid fakes. The CAS number also smooths scientific collaborations. One email with the wrong identifier could derail a project or send a shipment to the wrong continent. Mistakes like this waste time and erode trust, both inside and outside the lab.

What Can Be Done

Fixing confusion means treating CAS numbers like gold. Companies that invest in regular training see fewer mishaps. I remember a simple poster on the lab wall: "Always check the CAS, not just the name." It saved many from costly mix-ups. Software systems can help too, flagging mismatches between compound names and their CAS numbers before a purchase order goes out or a label gets printed. Governments and regulatory bodies play a part by enforcing strict reporting based on these identifiers. It creates a strong chain of accountability from the chemist’s desk to the truck driver’s manifest.

In the End, Details Shape the Big Picture

The CAS number 32721-05-2 for 3-Methyl-6-Methoxyaniline might just look like another bureaucratic detail, but over time, using it right means less risk, tighter safety, smoother science, and better business. A culture that sweats these details ends up standing out where it matters most: in safety, reliability, and trust.

How should 3-Methyl-6-Methoxyaniline be stored to maintain its stability?

Why Storage Choices Affect Chemical Stability

Years spent in the lab teach you one thing above all else: don’t underestimate storage. The quirks of a substance like 3-Methyl-6-Methoxyaniline can catch anyone off guard, no matter how much chemical theory you’ve studied. Even small missteps—like forgetting that a compound hates the sun, or thinking that room temperature means every room—have real consequences.

Temperature and Light: The Daily Threats

Leaving a bottle of 3-Methyl-6-Methoxyaniline exposed to temperature swings can kick off decomposition or unwanted reactions. Most references agree that this aniline derivative prefers life on the cooler side. Refrigerators set between 2°C and 8°C offer a much safer environment than that shelf above the heater in the storeroom. Direct sunlight also creates problems. I once saw a colleague’s sample turn dark after just a day near a window. A dark glass container that blocks light makes a difference, backed up not just by tradition but by years of comparative sample checks.

Avoiding Moisture and Air Exposure

Moisture leads to hydrolysis, and often, ruined product. Air brings in oxygen and sometimes even traces of acid. Sealing the bottle right after every use stops these from sneaking in. Desiccators, although sometimes seen as overkill, give another layer of protection by sucking up stray humidity. Labs where people skip this step pay for it eventually with degraded or contaminated samples, plain and simple.

Container Choices and Clear Labeling

Materials matter. Glass stands up to most issues, while some plastics start to leach or interact, especially over time. If someone asks whether to use HDPE or amber glass, I’d pick amber glass every time. Labels that include the date of receipt, open date, and even initials create a clear record. That’s not bureaucracy talking—just an honest acknowledgment that memory fails more often than most want to admit.

Handling and Segregation in Practice

A shelf crowded with strong acids, oxidizers, and random amines is a recipe for disaster. Segregation doesn’t just protect against spills and cross-reactions; it keeps the paperwork down. Fire marshals and safety inspectors can spot lazy storage in seconds. Once I moved a stored bottle away from a nitric acid solution—and avoided a headline-grabbing lab incident. It’s not just about theory; it’s about daily, practical risk reduction.

Insisting on Good Habits Pays Off

Routine stock checks, prompt cleaning after spills, and inspecting containers for cracks or signs of weird pressure build-up can save months of research effort. Labs that let compounds sit for years without checks often find mystery goo instead of the chemicals they thought they had. Getting disciplined here doesn’t slow the work—it keeps results reliable.

Backed by Evidence, Secure for the Future

Following good storage habits aligns with the recommendations from chemical safety boards and regulatory bodies like OSHA and the ACS. These organizations push for documented standard operating procedures for all hazardous substances. Observing these guidelines doesn’t just keep regulators happy. It protects health and keeps projects running, especially in high-stakes research or manufacturing settings.

3-Methyl-6-Methoxyaniline
3-Methyl-6-Methoxyaniline
3-Methyl-6-Methoxyaniline
Names
Preferred IUPAC name 4-Methoxy-2-methylaniline
Other names 2-Amino-5-methylanisole
5-Methyl-2-methoxyaniline
Pronunciation /ˈθriː ˈmɛθɪl sɪks ˈmɛθɒksi əˈnɪlɪn/
Identifiers
CAS Number ['2836-83-9']
3D model (JSmol) `CNc1ccc(C)cc1OC`
Beilstein Reference 600828
ChEBI CHEBI:76268
ChEMBL CHEMBL489141
ChemSpider 158246
DrugBank DB07931
ECHA InfoCard 100.058.393
EC Number 205-464-5
Gmelin Reference 70413
KEGG C01382
MeSH D017057
PubChem CID 106095
RTECS number BY7375000
UNII W3H3YB2WT7
UN number UN3335
CompTox Dashboard (EPA) DTXSID70852704
Properties
Chemical formula C8H11NO
Molar mass 151.19 g/mol
Appearance Light brown to brown solid
Odor amine like
Density 1.08 g/mL at 25 °C (lit.)
Solubility in water Slightly soluble
log P 1.7
Vapor pressure 0.0357 mmHg at 25 °C
Acidity (pKa) 4.54
Basicity (pKb) 12.23
Magnetic susceptibility (χ) -64.2 × 10⁻⁶ cm³/mol
Refractive index (nD) 1.611
Viscosity 0.92 cP (25°C)
Dipole moment 2.33 D
Thermochemistry
Std molar entropy (S⦵298) 179.1 J·mol⁻¹·K⁻¹
Std enthalpy of formation (ΔfH⦵298) 80.2 kJ/mol
Std enthalpy of combustion (ΔcH⦵298) -4194 kJ/mol
Pharmacology
ATC code
Hazards
Main hazards Harmful if swallowed, in contact with skin or if inhaled. Causes serious eye irritation. Causes skin irritation. Suspected of causing cancer. May cause damage to organs through prolonged or repeated exposure.
GHS labelling GHS07, GHS08
Pictograms GHS07
Signal word Warning
Hazard statements H302, H315, H319, H317, H334, H410
Precautionary statements Precautionary statements: P261, P264, P271, P272, P280, P301+P312, P302+P352, P304+P340, P312, P321, P330, P363, P405, P501
NFPA 704 (fire diamond) 2-2-0
Flash point 97 °C (closed cup)
Autoignition temperature 430 °C
LD50 (median dose) LD50 (median dose): Oral rat 467 mg/kg
NIOSH KL9275000
PEL (Permissible) Not established
REL (Recommended) 0.5 mg/m3
IDLH (Immediate danger) Unknown
Related compounds
Related compounds Aniline
3-Methylaniline
6-Methoxyaniline
3-Methyl-6-Nitroaniline
3-Methoxy-6-Methylaniline