Years ago, chemists kept looking for new building blocks with balanced reactivity and selectivity. 4-[(5-Iodo-2-chlorophenyl)methyl]phenol didn’t fall out of the sky; it grew out of a century of organic chemistry driven by research into halogenated aromatics. Early milestones in electrophilic aromatic substitution showed just how game-changing the introduction of iodine and chlorine could be on phenyl rings. In the late 20th century, researchers zooming in on tailored intermediates for fine chemicals and pharmaceuticals began to tinker more purposefully with phenol modifications. Discovery started in bench-top glassware, but real traction came as analytical tools like HPLC and NMR gave researchers clear insights into molecular structure, helping them see the puzzle pieces fit together. As synthetic routes advanced, and purification methods improved, the compound became less a chemical curiosity and more a practical workhorse for academic labs and R&D outfits.
Look at 4-[(5-Iodo-2-chlorophenyl)methyl]phenol and you see more than just a name. This molecule brings together halides—iodine and chlorine—and a phenolic group tethered through a benzyl linkage. Chemists turn to it as a flexible scaffold in creating new therapeutic candidates or custom materials. Its structure strikes a nice balance: robust under routine handling, amenable to many standard transformations, but reactive enough to serve as a springboard for further chemistry. It’s not just a test-tube special; scale-up protocols exist, and quality control standards have caught up fast, reflecting its real-world application.
In powder form, the compound appears as a solid—typically off-white or beige, depending on minor impurities from synthesis or handling. Its melting point sits around 110–116°C, confirming laboratory-grade purity pretty quickly. The phenolic proton shows up sharply in NMR studies, giving a fingerprint for analysts. Solubility tilts towards organic solvents like acetone, DMSO, or chloroform; water solubility comes in low, stemming from the hydrophobic aromatic rings and the halogen tweaks. Its stability under ambient conditions outpaces many related intermediates, probably thanks to the shielding effect from both iodine’s heft and the para-connectivity of the benzyl group. Moisture control matters, but no one has seen it degrade from brief air exposure alone. Aromatic substitution reactions passively confirm its steric profile, and standard IR signatures back its purity claims.
Commercial supplies often guarantee at least 98% purity by HPLC. Labels highlight physical state, critical safety hazards, batch number, and storage guidance: keep sealed, store in a dry, cool place away from heat or direct sunlight. Detailed analysis sheets accompany each shipment, listing residual solvents, heavy metals (mostly below detectable limits), and spectral matches against reference standards. European regulations mandate inclusion of signal words relating to any handling hazards. Vendors stamp each package with a UN number, GHS pictograms, and emergency contact details—to satisfy both regulatory standards and responsible laboratory habits.
Most established synthesis involves alkylation of a substituted chloroiodotoluene, with benzyl protection and subsequent deprotection, or direct Friedel-Crafts-type alkylation onto phenol derivatives using the chloroiodobenzyl halide as an alkylating agent. The reaction flows under mild Lewis acid catalysis—aluminum chloride sees heavy use—giving the target molecule as the predominant product. Purification typically involves flash chromatography, with silica gel separating by-products from the intended molecule, no fancy tricks needed. On larger scales, some labs go for crystallization from ethanol or acetone to keep costs manageable. The supply chain for the starting materials usually stays short—simple halogenation then benzylation—and robust, avoiding rare reagents.
Chemists flock to this compound for its versatile reactivity. The iodine at the 5-position makes for a ready leaving group in Suzuki-Miyaura or Sonogashira couplings, letting researchers tack on custom aryl or alkyne substituents. The chlorine adds a secondary handle for further manipulation or for controlling regiochemistry in cross-coupling sequences. The phenolic hydroxyl brings nucleophilicity, opening the door to ether or ester formation, phosphorylation, or even surface attachment for material science. In my own experience, we ran O-alkylation and saw sharp yields, with the para-relationship helping avoid ugly side products. Nitration remains selective except under extreme conditions. Ring reduction, halogen-metal exchange, and acid-catalyzed oligomerizations all proceed in stepwise, controllable ways. The compound’s resistance to unwanted rearrangement under standard protocols saves time for everyone.
The compound answers to a handful of other names, depending on catalog or nation: para-hydroxybenzyl(5-iodo-2-chlorophenyl), 4-(chloroiodophenylmethyl)phenol, or, in some research circles, CIMP-phenol. Several suppliers code it under proprietary numbers or abbreviations, but the IUPAC name holds steady for regulatory and analytical paperwork. Search records in chemical registries show cross-indexing with these synonyms, so sourcing and literature review don’t spark confusion.
Lab workers know not to take phenols lightly, and this one’s no exception. Gloves and splash goggles belong on every bench running workups or purification. Spills invite local irritation and absorption risks; waste disposal means collecting washings as halogenated waste, steering clear of drains. Iodinated aromatics sometimes pin the needle on long-term health risk, so workspaces get engineering controls—fume hoods, air handling, solvent containment. Material Safety Data Sheets (MSDS) describe acute effects: skin, eye, and respiratory system irritation, and outline step-by-step action if exposure occurs. Routine air monitoring, double labeling, and lockable storage back up safe usage in busy facilities. Transport by air or land follows international DG guidelines: proper labeling, secondary containment, and paperwork in line with both GHS and UN requirements.
Pharmaceutical research taps 4-[(5-Iodo-2-chlorophenyl)methyl]phenol as a core intermediate for novel anti-cancer, anti-inflammatory, and diagnostic imaging agents. The dual halogenation sets up interesting bioactivity profiles after further derivatization. Industrial chemistry applies it in synthesizing specialty polymers and functional coatings, especially where controlled halogen content boosts flame resistance or surface characteristics. I’ve witnessed its effectiveness firsthand in exploring enzyme inhibitors—the scaffold accommodates a surprising range of pharmacophores. In radiochemistry, heavy isotopes swap in for the iodine position, driving advances in tracer imaging. Material science groups leverage phenolic handles for surface anchoring, whether in thin film technologies or for constructing sensors with tailored selectivity.
Labs focus energy on extending the functionality of this scaffold. Medicinal chemists screen its derivatives in cell assays, looking for leads with strong activity and manageable off-target effects. Automation plays a role in optimizing reaction conditions, pushing yields higher and lowering solvent use. Analytical chemists revisit old reaction maps, mining for faster, cleaner routes—sometimes using microwaves, sometimes using enzymatic pathways. Efforts continue to improve regioselective couplings at the iodo site; advances in ligand design and palladium sourcing made tough transformations routine. Green chemistry teams hunt for routes free of chromium or mercury, looking to bio-based oxidants instead. The internet now hums with new patents and preprints, reflecting mounting interest across continents and sectors.
Researchers don’t take safety on faith. Published studies detail in vitro cytotoxicity across common cell lines, with some work extending to aquatic toxicity in model organisms. Most data cluster around the oxidative stress induced by halogenated aromatics in mammals, and metabolites get checked for liver or kidney effects in rodent models. Long-term exposure studies, both occupational and accidental, make clear the wisdom of personal protective gear. In one project I helped review, neither parent compound nor breakdown products persisted in soil or groundwater, but vapor-phase transfer in poorly ventilated spaces could pose concern. Toxicological reviews lean cautious: avoid chronic exposure, maintain clean work surfaces, and follow best practice for spills.
Growth in computational chemistry promises refined target design using this scaffold—and new machine learning models flag promising derivatives before a single flask boils. Increased interest in sustainable process chemistry could yield greener, lower-cost routes without sacrificing performance. Pharmaceutical and diagnostic imaging sectors both look likely to lean heavier on unique halogen substitutions, giving this compound staying power far past yesterday’s applications. Regulatory standards will keep ratcheting up, but suppliers and end users adapt fast, driving safer products and higher quality. Startups and established firms share the same direction: more focused research, robust analytics, and relentless improvement in both product and protocol.
Every once in a while, a chemical rolls through the lab that looks simple but can lead to all sorts of breakthroughs. 4-[(5-Iodo-2-chlorophenyl)methyl]phenol is one of those compounds you’ll spot in modern research journals, especially if you keep an eye on biomedical and synthetic chemistry. Ask chemists, and they’ll mention this molecule pops up most in pharmaceutical development and advanced materials work, often as a valuable building block or as a special probe in experiments.
Drug discovery depends on finding just the right structure to fit a biological target. 4-[(5-Iodo-2-chlorophenyl)methyl]phenol’s unique shape pairs an iodine atom and a chlorine on an aromatic ring, creating a spot that reacts well in cross-coupling reactions. Medicinal chemists use it for introducing iodinated groups, which can raise a drug’s ability to latch onto certain proteins. Iodine also allows tracking with imaging technology—think SPECT scans, where a radiolabeled molecule follows the path of potential drug candidates inside the body. These applications steer researchers closer to new tests for disease and eventually safer, more tailored medicine.
This compound isn't only for people after new medicines. Synthetic chemists value it as a reactive intermediate. The halogen groups—iodine and chlorine—bring in a range of reactivity that lets you bolt on different pieces and create other molecules with specific functions. These might turn into molecular switches, specialty solvents, or even ingredients for high-performance plastics and electronic components. Its versatility finds a home in material science labs, where scientists are always searching for something that will conduct or insulate better.
Working with iodine- and chlorine-containing chemicals takes experience and a strong safety culture. It’s critical to handle them in controlled environments like fume hoods and wear the right protective gear. Iodinated organics have a reputation for causing skin and respiratory irritation, and some members of this chemical family carry risks of toxicity. Reading up on the safety data sheet and storing it correctly isn’t optional—it’s part of daily lab life. In research settings I’ve been around, these kinds of compounds never get left out on a bench. They go right back in the locked cabinet with strict labeling, including date and user initials.
Science keeps moving—one challenge lies in making specialty molecules more widely available without putting people or the environment at risk. Modern manufacturers focus on cleaner reaction techniques, tracking every gram, and using safer solvents to lessen contamination. Labs today also run tighter green chemistry reviews before buying these specialty ingredients, weighing waste and energy costs before starting a synthesis.
Specialty molecules like 4-[(5-Iodo-2-chlorophenyl)methyl]phenol matter most where they drive new knowledge and better products. Responsible labs and manufacturers recognize that care in synthesis, use, and disposal returns value—not only for intellectual property and patent filings, but for the health of researchers and everyone downstream. Thoughtful approaches to sourcing and handling turn powerful building blocks into real progress, both in drug development and in materials science. In my own experience, good results always come from balancing scientific ambition with practical responsibility.
My early days working in a materials laboratory taught me something that no textbook could drive home—chemical purity isn’t about chasing some impossible ideal or ticking boxes for regulators. It’s about getting the right results, building products that work every time, and making processes safer for everyone involved. Purity, simply put, answers a direct question: how much of the stuff you want is actually in the bottle, and what else is tagging along for the ride?
Chemical purity gets measured as a percentage. If you pick up a bag of sodium chloride labeled “99.9%,” the other 0.1% didn’t come from nowhere. That leftover sliver covers impurities—unwanted substances, sometimes just dust or water, other times trace metals or manufacturing byproducts. A chemist doesn’t just take these numbers at face value. Every decimal point can shape research outcomes, production yields, and safety margins.
In academic research, I saw projects stumble because a reagent’s purity came up short. One project on solar cell materials hit a brick wall until we traced odd results back to a batch of chemicals with too much iron contaminant. A consistently reliable research outcome calls for chemicals that don’t throw a wrench in the works. This doesn’t mean everyone needs “ultra-pure” standards, but knowing what’s in your bottle gives you control instead of rolling the dice.
Pharmaceutical companies probably worry the most about chemical impurities. Clinical drugs go into humans, so unknown substances can bring real risk. A single impurity beyond trace amounts can shut down a drug trial or trigger expensive recalls, not just costing money but also trust. Food supplements, cleaning supplies, and electronics all have their own thresholds, shaped by government standards and what a given process can tolerate.
Modern labs these days rely on techniques like high-performance liquid chromatography, mass spectrometry, and atomic absorption spectroscopy to hunt down impurities, even down to the part-per-billion level. Every reliable supplier should hand over a certificate of analysis. That document isn’t marketing fluff—it tells the user how pure the chemical is, what tests were run, and how much uncertainty might exist in each measurement.
Years of managing manufacturing batches have shown me: chemical purity can make or break a production run. Impure starting materials can lead to wasted effort, off-spec batches, and delays. A small firm using low-cost chemicals occasionally falls into the trap of price over quality, only to spend more later fixing problems that sprout from those impurities. Factories with solid quality control log every batch, record every deviation, and don’t cut corners.
Customers today ask sharper questions. They demand documents, traceability, and sometimes surprise audits. The best suppliers welcome these checks and support clients with data. Full transparency encourages long-term business relationships as nobody likes surprises, especially in high-risk sectors.
Better standards, smarter testing, and transparent reporting set the stage for improvements across different sectors. Companies that track purity as a core value cut waste, boost consistency, and earn trust from regulators and clients. Investing in purity isn’t just risk management—it’s a way to build better products and a stronger reputation in a crowded market.
Handling chemicals brings trust and responsibility. A compound like 4-[(5-Iodo-2-chlorophenyl)methyl]phenol doesn't forgive laziness or shortcuts. Even if the structure looks simple on paper, the presence of iodine and chlorine in its makeup hints at hazards. Over my years working around small-molecule labs, nothing taught respect for proper storage faster than watching a careless moment lead to ruined experiments or emergency calls. Every bottle can trigger a chain reaction—figuratively or literally—if not respected.
Storage decisions start with choosing the right container. Glass always offers the safest route for chemicals like this, particularly those carrying halogens. Polyethylene or polypropylene sometimes fails when aggressive molecules begin leaching or reacting. One shattered flask, back in a cold Boston winter, was enough proof for me: glass never lies about the condition of its contents, especially with visible degradation, and it won’t suffer from slow leaching. Airtight seals matter just as much. Even a small crack will let moisture reach the powder, and humidity can sneak in unnoticed if someone swaps a rubber stopper with a screw cap for "just a couple of days." The risk: unpredictable degradation or even pressure buildup there in the dark of the shelf.
Beyond the container, temperature swings spell trouble. Warm rooms, sunny windowsills, or storage beside heat-producing instruments—the wrong choice nearly guarantees product breakdown or reactivity. Personal rule of thumb: unless the supplier's paperwork says room temperature reaches the compound's comfort zone, colder is better. Refrigerators set at 2–8°C serve as the workhorses for medium-term chemical stashing. My early lab days drove this home the hard way after a colleague overlooked the impact of summer temperatures on a shelf full of phenols, losing nearly a month’s research afterward. Chemical compounds don’t just "wait around" for your schedule—they continue reacting, given half a chance.
Sunlight never does the molecule any favors. I learned from a mentor that even compounds which look stable on paper can drift toward slow breakdown under UV, especially when aromatic rings and substituted halogens enter the picture. Opaque containers or dark glass shut out most of that threat. All it takes is one mislabeled clear bottle on a lab bench to realize the difference a little foresight makes.
Labels seem mundane, but every missing or fading tag has the potential to shut down a whole workspace. Writing the full name—including hazardous designations—and the date of receipt or opening gave me peace of mind. Inventory logs sound tedious until you’re the one cleaning up after a mystery vial spill or searching for a quickly degrading compound during an urgent synthesis. Initiatives like color-coded tape or checklists might look like overkill to the uninitiated, yet their utility becomes clear fast.
Many labs underfund safe storage training. Investing in regular safety refreshers, clear written protocols, and backup supplies of high-quality containers saves money and cuts risk long-term. Encourage colleagues to review storage spots monthly and purge expired stock. Suppliers can help by offering clear, concise safety sheets instead of buried details in fine print. Labs—especially those with rotating students—benefit from visual reminders: color-coded storage areas, up-to-date material safety posters, and team walkthroughs of storage rooms before every new project. Small changes today beat major accidents tomorrow.
Questions about safety and handling reach deep into the way people relate to chemicals, whether it’s a bottle in a high school lab or a drum in a manufacturing warehouse. I’ve opened safety data sheets more times than I’ve counted, and one thing stands out: clear, honest guidance changes everything. Chemical mishaps do not just dent reputations, they leave real damage—sometimes permanent injuries, sometimes environmental scars that stretch for decades.
Every compound brings its own risks. Some need simple gloves and goggles. Others call for ventilated hoods, flame-resistant coats, and a healthy respect for labels like “corrosive” or “toxic by inhalation.” A 2016 report from the Centers for Disease Control and Prevention tracked chemical accidents in schools and workplaces. Over 13,000 cases in a year resulted in injury or exposure. Nearly half happened because someone skipped reading the hazard section or worked with vague instructions.
Trust grows when manufacturers and suppliers publish transparent information. I watch parents in hardware stores read the small print on paint thinners and fertilizers, scanning for hazard icons and instructions. They know there’s no shortcut to peace of mind. Clarity matters more than legal disclaimers. The gold standard, the globally harmonized system (GHS), breaks hazards into categories—flammable, carcinogenic, skin sensitizer—and then spells out what precaution to take. It doesn’t depend on what country the person lives in; risk pays no attention to borders.
For people working with compounds every day, muscle memory kicks in thanks to simple posters and quick-access guidebooks, not lengthy technical manuals. My early mistakes became learning experiences because someone put a red sticker where it counted or posted a clear step-by-step for neutralizing acid spills next to the lab sink. The Occupational Safety and Health Administration (OSHA) makes these labels a requirement, not a suggestion, and regular training is its bedrock, not just a formality.
Not every label tells the full story. Small suppliers or labs sometimes cut corners. It’s tempting to treat less ‘dangerous’ compounds as routine, ignoring what’s out of sight—vapors, slow chronic effects, or incompatibility with other common chemicals. Even in 2023, chemical burns and poisonings pop up due to gaps in training or inconsistent hazard communication. As companies push for cost savings or faster turnaround, the risk never fades for workers.
A better way exists: demanding up-to-date safety information for every shipment and batch, not just the initial product. Anyone handling chemicals should get direct access to the latest safety data online or through QR codes. Stories of health issues, even decades after exposure, underline that these safeguards stand between people and disaster. Professional organizations—like the American Chemical Society—push for routine refresher courses and audits. People can ask: Is our data old? Are our procedures still relevant? This self-check should become as routine as locking up at the end of the day.
Safety goes hand in hand with honesty and responsibility. Every compound, no matter how benign its name, deserves respect. No one benefits when safety becomes a checkbox or an afterthought. Trust, transparency, and routine reminders create a culture where no one asks, “Is there any safety or handling information available?”—because it’s already in their hands.
Digging into the details of chemicals sometimes feels like a maze. With 4-[(5-Iodo-2-chlorophenyl)methyl]phenol, the long name gets to the heart of a simple idea: small changes in atoms make a huge difference. Here, the combination of iodine, chlorine, and other building blocks bumps the molecular weight up. Doing the math means adding up each element’s contribution based on the structure. The piece with iodine alone swings the weight by an extra seventy-six units. This compound ends up with a molecular weight of around 326.56 g/mol.
Back in undergrad chemistry labs, a single decimal would sometimes change the outcome. Chemists working with materials like this don’t leave room for guesswork. Misreading a molecular weight can lead to off-the-mark calculations and failed synthetic runs. A misplaced decimal trickles down: cost overruns, wasted reagents, and muddied results pop up fast. Here, the correct figure gives scientists the edge, letting them chart out reaction plans, dose calculations, and purity checks with confidence.
Think of working in an environment where every milligram counts—pharmaceutical research, analytical testing, or even patent applications. A wrong value in an assay can throw out compliance checks or skew toxicology data. More than just math, these numbers build trust between teams and across industries. Because of this, double-checking calculations against trusted sources like PubChem or ChemSpider always brings peace of mind.
Medical chemists hunt for potential treatments that usually hinge on slight modifications. Adding a halogen atom like iodine into a molecule, as you see here, often affects not only weight but also biological properties such as metabolism, binding strength, and toxicity. For instance, halogen groups sometimes slow down metabolic breakdown, stretching the active period of a drug. That detail matters for dosing cycles and, ultimately, the outcome for patients.
Getting to that trusty molecular weight means going through each element: carbon at 12.01, hydrogen at 1.008, oxygen at 16.00, chlorine just over 35, and the heavy hitter, iodine, at almost 127. Pull open an old chemistry notebook, and you’ll find similar tallies on every page. Habits from those days still shape good practice today. Confirmation comes from accredited databases, not just from calculators.
Responsible scientists stick to the basics—check, re-check, and then cross-reference. This approach lines up with current best practices in research integrity. Reliable data lets others repeat your results and builds on years of collaborative science.
The topics wrapped inside this compound go far beyond textbook examples. Anyone working with it—be it pharmaceutical developers, quality control analysts, or regulatory reviewers—relies on tight numbers. Getting these fundamental steps right keeps research on track and innovation moving safely forward. Looking at molecular weights this closely translates to better science and, over time, better solutions for real-world problems.
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