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A story about organo-sulphur compounds runs deep through the history of chemistry and industry. Some families of these compounds found use in the earliest antiseptics, stretching back to times when simple sulfur ointments rubbed on wounds kept infections at bay before antibiotics took over. As knowledge and chemical skills grew, researchers in the late 1800s and early 1900s discovered new reactions for linking sulfur atoms to organic groups, giving rise to thioethers, thiols, and sulfonic acids. This burst of foundational work allowed the textile industry to create vivid dyes, enabled the rise of modern drugs, and let agriculture access new pest control tools. The legacy left by those chemists runs through everything from modern antifungals to the aromas in foods—sulfur’s characteristic scent appears not just in nature’s warning signals but in the flavor of garlic, onions, and truffles. Discovery didn’t end in the early days. Patent libraries and chemistry journals keep swelling with tweaks, improvements, and game-changers in how we build these molecules and turn their odd properties into useful products.
Ordinary people cross paths with organo-sulphur compounds every day without a second thought. In agriculture, they appear as potato scab killers or as part of wheat mildew defenses. Rubber vulcanization owes its stretchy, durable character to sulfur links, and a look at the medical cabinet shows heart medicines (think of nitroglycerin or captopril) and even basic antiseptics born from sulfur chemistry. Markets for agrochemicals, pharmaceuticals, dyes, flavor houses, and plastics all rely on these compounds for distinct performance. Whether it’s the smell of a skunk or the strength in a high-pressure gasket, the practical reach stretches far. Over the years, improvements in synthesis produced cleaner, purer, and more reliable compounds, opening up avenues that once looked impossible. You can’t talk about organo-sulphur chemistry without thinking about both low-volume, high-impact drugs and bulk chemicals for industrial workhorses.
People in labs know well the double-edged sword presented by organo-sulphur compounds. Many carry a strong, often unpleasant smell—enough to label some reactors off-limits for anyone with a sensitive nose. The signature volatility and reactivity that make them so valuable for certain applications also complicate their safe handling. Strong odors usually hint at low thresholds for detection, which in turn raises workplace safety concerns. On the chemistry side, sulfur atoms bring oxidation states that let them slot into complex reactions; thiols make great nucleophiles, and sulfonic acids act as supercharged acids in water-based reaction mixtures. Stability under heat and pressure differs sharply; what works in a pharmacology lab might degrade in an engine cylinder or during plastic extrusion. Problem solving for product purity—removing smelly or reactive byproducts—drives what feels like an endless arms race between chemists and QA teams.
Chemists working with organo-sulphur compounds rarely get an easy ride. Making them often requires a blend of old-school techniques and modern advances. Traditional routes include reacting alcohols or alkyl halides with thiourea, using sulfur chloride, or treating aldehydes with hydrogen sulfide. Newer methods aim to give selective, high-yield routes with greener chemistry (‘greener’ meaning less pollution, less waste, and safer solvents). The expansion of catalytic methods—especially with transition metals—opened doors to more precision, less waste, and shorter reaction times. Sometimes, microbes work as miniature factories, using enzymes to bolt sulfur onto carbon frameworks for pharmaceuticals or fine chemicals. This mix of industrial might and gentle biotechnology shows that adaptation remains central—one size never fits all when making these molecules cleanly and efficiently.
A good deal of organo-sulphur chemistry rides on discovering new ways to swap, attach, or protect functional groups during reaction sequences. Sulfoxidation flashes sulfur atoms into higher oxidation states. Reductive techniques step them back. Chains grow longer, rings snap closed, and aromatic systems take on sulfur arms. The big picture shows a toolbox overflowing with cross-coupling strategies, sulfonation protocols, and deprotection maneuvers. Downstream processes—like removing impurities or scaling up for tons-per-day production—push development on new purification columns, solvent choices, and energy-saving steps. This part of the field hums with ongoing research, since cutting a processing step or removing a hazardous intermediate means lower costs, fewer accidents, and better products at the end.
Working with organo-sulphur compounds means navigating an endless parade of synonyms, trade names, and regional labels. What one catalog calls methylthioethanol, another lists as 2-hydroxyethyl methyl sulfide—and yet both refer to the same molecule. Regulatory filings, customs paperwork, and research articles all stick to their own favorite designations. It only takes a single mix-up to order the wrong chemical or fall afoul of cross-border rules that flag innocuous substances as drug precursors. This confusion drove many labs to push for global standards in chemical naming (the IUPAC system), but commercial catalogs, country-specific rules, and informal lab slang keep the field messy. Staying vigilant about identity matters more than most people outside the business realize.
Anyone who’s handled organo-sulphur compounds for long has stories about headaches, stinging eyes, or chemical burns—if not worse. Sulfur brings toxicity risks tied to dose, exposure time, and the environment. Some of the most famous disasters in chemical history (think of methyl mercaptan plant leaks) remind us that complacency leads to injury, lawsuits, and community anger. Regulations for storage, labeling, and worker protection shape the daily routine in labs and plants. Fume hoods, leak detection sensors, full-face respirators, and strict transfer protocols are not up for debate—if you skip a step, the penalties often arrive quickly and clearly. Workers’ health depends on constant vigilance, routine refresher training, and a willingness to update standards as new research sheds light on hidden risks. Industry watchdogs and government agencies play a key role in pushing for transparency and accountability, especially as new compounds enter the market each year.
Ask a group of chemists about organo-sulphur compound use, and most point straight to pharma and pesticides, then trail off. Few realize how broad the field really is. Many plastics rely on tiny amounts of sulfur substitutions to tune properties for heat resistance or flexibility. Designers of lithium batteries count on sulfur-based carriers for both safety and performance gains. In the food industry, flavorists build up brand-defining aromas through the subtle use of organo-sulphur precursors. Refining gasoline, treating municipal water, even shaping the next generations of solar cells—everywhere you look, sulfur compounds quietly shape performance and durability. Part of the challenge lies in communication. Engineers, marketers, and policymakers rarely recognize the unseen links that sulfur chemistry supplies until a missing ingredient halts production or ruins a cycle.
Research labs keep hunting for new methods to produce organo-sulphur compounds with lower emissions, higher selectivity, or easier purification. Green chemistry plays a bigger role each year, as tighter rules on waste and emissions force the retirement of “legacy processes” that once ruled the roost. As analytical techniques advance, scientists gain a better window into product purity, trace contaminants, and reaction kinetics. For smaller specialty manufacturers, the cost of staying near the cutting edge often feels daunting, but new catalysts, “microwave microwave” methods, and enzyme-based solutions hold promise for trimming both waste and cost. Partnerships between academic labs and industry consortia often supply the money and muscle needed to leap the hurdles that keep next-generation products just out of reach.
Over years of handling these molecules, chemists pay close attention to both immediate and long-term toxicity. Not everything with a sulfur atom spells trouble, but some families (notably alkyl thiols and sulfonamides) cause headaches, respiratory distress, and impacts on aquatic life even at low levels. Regulatory scientists now demand thorough toxicological profiles before a new compound heads to scale-up, and companies caught on the wrong side of emerging science risk major recalls and legal reprisals. Modern labs now use cell culture models, fish embryo tests, and sensitive environmental monitors to flag concerns before they become emergencies. The bitter truth: safer synthesis and more robust testing demand money and time, which can slow down the debut of new products but ultimately save lives and brands down the road.
Every field that relies on organo-sulphur compounds faces a dual challenge: push for greater performance while facing stronger regulatory restrictions and public concern about health and climate. Development of biodegradable, low-toxicity alternatives sits high on research wish lists—especially in agrochemicals and pharmaceuticals, where resistance and environmental impact now shape every stage from early discovery to market launch. The drive for sustainable chemistry encourages revamping old synthetic routes, replacing solvents, slashing waste, and using renewable starting materials wherever possible. One gets the sense that future opportunities won’t just come from new reactions or products, but from partnerships focused on global health and less-polluting manufacturing. Consumers and communities now expect both innovation and responsibility. Cheaper, safer, and greener are fast becoming the only acceptable options for those wishing to stay relevant and respected in the decades ahead.
Many people pass through daily routines without giving much thought to the raw chemicals running the world behind the curtain. Organo-sulphur compounds might sound obscure, maybe something for lab coats and textbooks, but their fingerprints cover everything from the food on the table to the medicine cabinet.
Everyday life feels bland without flavor, and organo-sulphur compounds play a starring role here. Producers use compounds like allicin (from garlic) and allyl isothiocyanate (from mustard and horseradish) as natural preservatives and flavor boosters. Not every flavor comes straight from the plant; scientists have found ways to synthesize these sulfur notes to replicate or sharpen tastes in packaged foods and snacks.
Sulphur compounds work as antioxidants in food, helping keep oils fresh and stopping spoilage. For folks like me who enjoy food with a strong kick—onions, garlic, certain spices—that punch of flavor comes mostly from sulphur chemistry combining with enzymes after the cell walls break. Without these compounds, the dinner table would lose much of its edge.
Agriculture has always fought against pests and disease. Many fungicides and pesticides rely on organo-sulphur chemistry. Thiomethoxam and dithiocarbamates stand out in crop protection, keeping fungi and harmful insects at bay. Overuse brings valid safety worries, so sustainable approaches include rotating different types and using less persistent options.
Sulphur-based fertilizers help correct soil lacking essential elements, which pushes crop yields up and keeps soils productive season after season. As someone who has planted their share of gardens, results speak for themselves—the difference between struggling tomatoes and a bumper crop often comes down to what’s mixed into the dirt below the surface.
A medicine cabinet rarely feels far away, and organo-sulphur compounds support several treatments. Sulfonamides rank among the classic antibiotics—the first class to beat bacterial infections. Chemists have gone further, creating drugs that lower cholesterol (like statins) or lower pressure in the eyes for glaucoma patients. Some anti-inflammatory drugs rely on these compounds to bring swelling down.
Sulphur is tough, chemically speaking, which makes it valuable in structures needing stability. For those fighting chronic illnesses or infections, having drugs that remain functional despite stomach acid or blood chemistry saves lives.
Modern life calls for better air, purer water, and more efficient fuels. Organo-sulphur compounds feature in extracting heavy metals from polluted water (using chelating agents), separating out contaminants in fuel refineries, and producing specialty plastics or rubber for safer tires. Flue gas scrubbers in power plants depend on organo-sulphur chemistry to trap toxic emissions before they escape into the sky.
Car buffs may not notice, but a carefully balanced sulphur additive can keep engines running smoother and reduce wear over thousands of miles. Scientists continue testing ways to lower pollution from both engines and factories.
Responsible use stands out as a challenge and a hope. Companies increasingly invest in greener chemistry, recycling waste and creating less hazardous byproducts. The best results come from committed research, careful tracking of long-term effects, and taking worker safety seriously. For the rest of us, it means staying informed and asking how these compounds affect everything from dinner to the air we breathe.
Organosulfur compounds show up in many places: in labs, the pharma industry, agrochemicals, and everywhere from cleaning products to research on possible new medicines. They have a big impact, but they don’t always play nice. My experience in chemical labs has taught me that missing even a small step in safety can land you in trouble, not just with spills, but with your own health. Many organosulfur compounds can burn your skin, irritate your lungs, or worse. A couple of stubborn droplets on a glove can end up on your face or desk if you're not careful. Each small mistake can stack up.
Some sulfur-containing chemicals release foul odors or toxic gases. A few of them catch fire in air or react with water. Several are notorious for leaving a rotten-egg smell that clings to clothing and sticks in your nose for hours. Beyond annoyance, some target the central nervous system, trigger allergic reactions, or can even damage organs over long exposures. The famous lab rule—don’t ever underestimate a compound—applies double here.
The basics start with the right space. Use a fume hood. No shortcut beats proper ventilation when moving or mixing these chemicals. I remember times when a colleague disregarded this rule for "just a quick transfer" and the whole lab ended up smelling like sulfur for days. It disrupts work and sometimes triggers headaches or nausea in sensitive people.
Don’t slack on personal protective equipment. Safety goggles, a snug lab coat, and thick, chemical-resistant gloves (not those thin latex ones from the campus nurse’s office) are essential. I’ve seen nitrile gloves dissolve with certain sulfur compounds—vinyl and butyl rubber offer better insurance. Closed shoes protect your feet from splashes. If you hate walking around with lab shoes, keep a dedicated pair at work.
Compounds should never end up in unmarked bottles, reused soda bottles, or old coffee containers. Labels matter—list the chemical name, hazard symbols, and the preparation date. This saves lives. Proper storage depends on keeping these compounds away from acids, oxidizers, and sources of ignition. Good habits with secondary containment trays help catch leaks that nobody planned. I’ve seen the damage when careless storage led to a slow leak that evaporated and exposed several colleagues.
Every lab dealing with these chemicals needs a spill kit. No sense waiting for a janitor—the people working with the compounds should know where the kit is and how to use it. Quick action limits damage. Baking soda can neutralize acids, but check the material safety data sheet (MSDS) before dumping anything on the spill. Ventilate after the cleanup and double check that you haven’t contaminated doorknobs or phones.
Working with these chemicals isn’t just about protecting yourself. Colleagues, cleaning staff, and waste disposal teams all rely on your attention to detail. Regular safety meetings and refreshers make it hard to forget the possible consequences, especially when stories and photos remind everyone how small mistakes go wrong. Learn the warning signs of exposure. Acting quickly cures more problems than waiting for a supervisor’s instructions.
Never pour leftovers down the drain. Chemical waste bins suited for organic material provide a safe exit from the lab. If in doubt, ask environmental safety personnel for guidance on the correct disposal stream. Enforcement may feel strict, but the fine for an accidental environmental release or a call to emergency services for a fire beats the headache of an unsafe shortcut.
People cross paths with organo-sulphur compounds more often than they realize. These chemicals get used in medicine, agriculture, and various industries. Garlic breath and the smell after a rainstorm in a city come from them. Some of these compounds help us: penicillin fights infection, and alliin from onions supports health. Yet, stories from factories and farms suggest workers sometimes notice headaches, breathing trouble, or skin reactions when exposed to high levels. The situation gets complicated when we look at less-known compounds outside the most famous few.
Getting a handle on how organo-sulphur compounds affect people often starts in the lab and moves into the real world. Research highlights that some compounds, like those in pesticides or industrial solvents, cause short-term irritation to eyes, nose, and throat if exposure climbs too high. Others, such as certain thiols or sulfides, carry a reputation for being toxic at higher concentrations; a single sniff of dimethyl sulfide at work can make someone dizzy or nauseous. A handful get listed as hazardous by agencies like OSHA and the CDC.
Heavy exposure doesn’t happen every day for most people, but workers producing chemicals, spraying certain fertilizers, or cleaning a blocked drain with special products often stand closest to risk. Scientists at the National Institute for Occupational Safety and Health have documented cases where chronic inhalation links to nervous system effects or liver trouble. Some studies tie organo-sulphur emissions from burning coal or car exhaust to higher rates of asthma attacks in nearby communities.
The tricky part is the wide variety. Organo-sulphur compounds range from harmless to highly toxic, depending on small changes in their structure. A single letter or number in a chemical name can turn a food additive into a hazardous pollutant. Regulatory bodies worldwide keep lists of what’s safe, but gaps remain for hundreds of obscure compounds.
Science makes clear that dose matters—a faint whiff of rotten eggs from a broken sewer won’t pose the same threat as working eight hours next to a chemical reactor leaking sulfur-based vapors. Health risks show up at different exposure levels: sensitive groups, such as children, pregnant women, and workers with existing lung problems, face higher stakes.
Trusting your nose is a poor defense, since some of the most dangerous gases have no strong smell above a certain level; hydrogen sulfide can knock out someone’s sense of smell before it hurts their lungs. Real-world solutions start with regular air monitoring, solid ventilation systems, and protective gear for people at high risk. Recognizing symptoms quickly and getting fresh air often stops a bad situation from turning worse.
For communities downwind from factories or near highways, addressing air quality makes more sense than just relying on warnings about rotten egg smell. Cleaner energy sources, up-to-date filtration, and regular equipment maintenance keep emissions lower. Those growing food with sulfur-heavy fungicides can protect health by following safety rules and using less risky alternatives where possible.
Looking out for each other counts just as much as laws or scientific advances. Sharing clear information on chemical labels and supporting honest reporting of exposure incidents help everyone make smarter choices. While organo-sulphur compounds can be both friend and foe, respect for their power—and a healthy dose of caution—goes a long way in protecting lives.
Few chemicals spark such debate among warehouse managers and transporters as organo-sulphur compounds. They spark more than just debate, too: even small spills or leaks can trigger powerful odors, toxic releases, and even hazards to both people and the environment. My years around chemical plants and farm depots taught me one thing—good intentions matter less than good protocols. So let’s get real about how these compounds deserve to be stored and moved, long before they wind up in the news for all the wrong reasons.
Some mistakes you only make once, and often you’re lucky it’s not the last mistake you ever make. Workers sometimes shrug off warning labels and “sulphur” just sounds like rotten eggs to some, but many organo-sulphur compounds bring dangers that go way beyond smell. Sources like the US Chemical Safety Board lay it out clearly: certain thiols, thioethers, and other organo-sulphur substances can release flammable, toxic gases if they overheat, or if moisture seeps in and reacts. Heavy fines and, more importantly, health emergencies have a long track record in handling slip-ups with these chemicals—no sense pretending they’re garden-variety warehouse stock.
Safe storage calls for practical steps—not expensive gadgets, just solid fundamentals. Every storage area needs proper ventilation, because vapors from these compounds do more than offend the nose; they can form explosive mixtures and compromise air quality. Dry, cool environments matter, since heat, sunlight, or water set off reactions that put everyone at risk. I once saw a delivery sitting half a day too long on a sun-baked dock; that oversight earned the crew headaches for a week, and wasted half the product.
Labels, secondary containment, and clear record-keeping sound basic, but each slip-up—using the wrong container, losing track of quantity, or crowding incompatible chemicals—shows up sooner or later in a safety report. Strong spill kits and personal protective gear belong on hand at all times, and not just during audits or inspections. A simple habit, such as locking up when nobody’s around or running regular checks for leaks, can prevent ugly, expensive surprises.
Hauling these compounds across town, or cross-country, brings its own headaches. The right tanks or drums make a real difference, especially if they use corrosion-proof materials—not all plastics or rubber linings stand up to sulphur compounds for long. Double-checking every valve-or plug before rolling out saves more than just time during a random checkpoint. Early in my career a skipped inspection cost my company two hundred gallons of foul-smelling runoff on the interstate, and a clean-up bill that dwarfed any transport savings.
Clear markings and paperwork cut down on confusion if something goes wrong in transit. Rules from the Department of Transportation and European ADR show the way here, spelling out segregation by hazard class, requirements for placards, and standards for driver training. That’s not red tape—it’s a survival tool, both for emergency crews and the communities along the route.
Organo-sulphur compounds aren’t going anywhere; industries need them, and they’re valuable. But the only real way forward is building a culture where nobody cuts corners. Regular drills, refresher courses, and honest incident reporting save more trouble than any shortcut. Experienced employees know the difference between “just storing a drum” and doing it right every time. It all boils down to respect for the hazards and pride in getting home safe—not just handling paperwork, but safeguarding lives and property.
Shipping organosulphur compounds across national borders is not as simple as filling out a shipping label and waving goodbye to the cargo. Regulations around these chemicals are serious business, shaped by concerns about health, safety, and environmental impact. A single misstep can mean fines, container holds, or worse, so exporters and importers ought to keep their paperwork and process sharp.
Authorities around the world, like the United States Environmental Protection Agency (EPA) and the European Chemicals Agency (ECHA), keep a sharp eye on which chemical substances cross their borders. Each nation has its own chemical inventories and control lists—in the U.S., it’s the Toxic Substances Control Act (TSCA) list; Europe follows REACH regulations. Companies bringing in or shipping out organosulphur compounds must check the specific substance against these inventories. If the compound is not registered or is restricted, you're looking at more paperwork—or a flat-out ban.
Customs authorities ask for detailed documents before any shipment leaves port or enters a new country. Material Safety Data Sheets (MSDS) stand at the front of the stack, summarizing hazards, proper handling, and what to do in case of exposure. Importers and exporters also usually deal with shipping declarations, invoice details, permits, and sometimes, pre-import notifications. Regulations like the Globally Harmonized System (GHS) have standardized hazard classification and communication, but paperwork must match the language and legal style expected at both origin and destination.
Transporting chemicals labeled as hazardous means you deal with another set of rules, such as the International Maritime Dangerous Goods (IMDG) Code for sea freight or the IATA guidelines for air shipments. Organosulphur compounds, with sometimes volatile or toxic characteristics, often fall into this category. Proper labeling, specific packaging, and stowage rules protect transport workers and the environment. Failing to follow these can cause delays and stiff penalties.
Regulators are paying more attention to the long-term effects of chemical shipments. In some jurisdictions, authorities require proof that exported or imported chemicals won’t damage air, water, or soil. Some organosulphur compounds trigger extra scrutiny because of their potential to pollute or their use in sensitive applications, such as food processing or pharmaceuticals. Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) in Europe stands as a good example—companies must show a safety dossier and risk assessments before approval.
Taxes, import duties, and quotas stack up, affecting price and market competitiveness. Free trade agreements between certain countries can lower the barriers, but only when every document is correct and every requirement met. The World Customs Organization’s Harmonized System (HS) code for organosulphur compounds helps customs classify the products for tariff purposes, and getting the number right speeds up border crossings.
From years working alongside logistics teams, I’ve seen that investing in regulatory know-how pays back quickly. Partnering with customs brokers who know chemical controls, leveraging digital compliance tools, and keeping close relations with suppliers and buyers, often means shipments move efficiently. Relying on experience, rather than learning by error, cuts stress and cost.
Regulations do not stand still—each year brings new laws or enhanced reporting requirements. Companies trading in organosulphur compounds must dedicate resources to stay in step, whether through trade associations, dedicated compliance staff, or ongoing legal training. The most successful teams treat compliance as a core part of their business, not an afterthought.
| Names | |
| Preferred IUPAC name | other organosulfur compounds |
| Other names |
Thioethers Sulphides Thiols Mercaptans Sulphones Sulfoxides Sulfonates |
| Pronunciation | /ˈʌðər ɔːˈɡɑːnəʊˈsʌlfə ˈkɒmpaʊndz/ |
| Identifiers | |
| CAS Number | 29309090 |
| Beilstein Reference | 0898734 |
| ChEBI | CHEBI:50857 |
| ChEMBL | CHEMBL4308795 |
| ChemSpider | 2283455 |
| DrugBank | DB13879 |
| ECHA InfoCard | 03b9d696-4c38-42d2-a01c-7a4fd6b2a51d |
| EC Number | 29309090 |
| Gmelin Reference | 17160 |
| KEGG | C14545 |
| MeSH | D02.241.081.700 |
| PubChem CID | 178 |
| RTECS number | WL3675000 |
| UNII | P7W1O61Y9F |
| UN number | UN3334 |
| CompTox Dashboard (EPA) | CompTox Dashboard (EPA) for OTHER ORGANO-SULPHUR COMPOUNDS: DTXSID2089655 |
| Properties | |
| Chemical formula | C2H6OS |
| Molar mass | Varies depending on the specific compound |
| Appearance | Appearance: White crystalline powder |
| Odor | Characteristic |
| Density | 1.3 g/cm3 |
| Solubility in water | Soluble in water |
| log P | 2.2 |
| Acidity (pKa) | 10.6 |
| Basicity (pKb) | 4.5 |
| Magnetic susceptibility (χ) | Diamagnetic (-8.0 × 10⁻⁶ to -10 × 10⁻⁶ cm³/mol) |
| Refractive index (nD) | 1.572 |
| Viscosity | NA |
| Dipole moment | 3.72 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 179.0 J·mol⁻¹·K⁻¹ |
| Std enthalpy of combustion (ΔcH⦵298) | -1367 kJ/mol |
| Pharmacology | |
| ATC code | R05DB |
| Hazards | |
| Main hazards | Harmful if swallowed, inhaled or in contact with skin; causes serious eye irritation; may cause respiratory irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | 💀⚠️🌊 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H335 |
| NFPA 704 (fire diamond) | 2-3-2 |
| Lethal dose or concentration | Lethal dose or concentration: LD₅₀ (oral, rat): 1 g/kg |
| LD50 (median dose) | 300 mg/kg bw |
| PEL (Permissible) | Not established |
| REL (Recommended) | 5 mg/m3 |
| IDLH (Immediate danger) | IDHL: 100 ppm |
| Related compounds | |
| Related compounds |
Thioethers Thiols Sulfonic acids Sulfoxides Sulfones Sulfonamides Sulfonyl chlorides |
