Chemical Compounds

Acetamide is the simplest amide derived from acetic acid. It is used as a plasticizer, solvent, and industrial chemical intermediate.

Acrylamide is a key monomer for polyacrylamide, used in water treatment and gel electrophoresis. It also forms in starchy foods …

Adenine is a purine nucleobase that pairs with thymine in DNA and uracil in RNA. It is one of the …

ATP is the primary energy currency of all living cells. It stores and transfers chemical energy by the hydrolysis of …

Adipic acid is the most commercially important dicarboxylic acid. It is a key monomer for nylon-6,6 production, combined with hexamethylenediamine. …

Alanine is a non-essential amino acid that is one of the most abundant amino acids in proteins. It plays a …

Alizarin is a red dye historically obtained from madder root. The first commercial synthesis of alizarin in 1869 was a …

Alpha-ketoglutarate is a key intermediate in the citric acid cycle and plays a central role in amino acid metabolism through …

Amoxicillin is the most commonly prescribed antibiotic worldwide. It is a penicillin derivative with a broader spectrum of activity than …

Polyaniline is a conducting polymer discovered in 1862 that changes color with pH and oxidation state. It is one of …

Arginine is a conditionally essential amino acid that is a precursor to nitric oxide, a key signaling molecule for blood …

Ascorbic acid, or Vitamin C, is an essential nutrient and powerful antioxidant. Humans cannot synthesize it and must obtain it …

Asparagine was the first amino acid to be isolated, discovered in asparagus juice in 1806. It plays a role in …

Aspartame is an artificial sweetener about 200 times sweeter than sugar. It is used in over 6,000 food products worldwide.

Aspartic acid is a non-essential amino acid that plays a key role in the urea cycle and nucleotide synthesis. It …

Aspirin (acetylsalicylic acid) is one of the most widely used medications. It reduces pain, fever, and inflammation by inhibiting COX …

Atorvastatin (Lipitor) was the best-selling pharmaceutical in history, generating over $125 billion in revenue. It lowers cholesterol by inhibiting HMG-CoA …

Atrazine is the second most widely used herbicide in the US, primarily on corn. It is banned in the EU …

Benzoic acid is the simplest aromatic carboxylic acid. Its sodium salt is one of the most common food preservatives worldwide.

Beta-carotene is the orange pigment in carrots and the most important provitamin A carotenoid. The body converts it to retinol …

Biotin, or Vitamin B7, is a cofactor for carboxylase enzymes. It is widely marketed as a supplement for hair and …

Bisphenol A is a chemical used to make polycarbonate plastics and epoxy resins. It has come under intense scrutiny as …

Bromothymol blue is a pH indicator that is yellow below pH 6.0 and blue above pH 7.6. It is widely …

Caffeine is the world's most widely consumed psychoactive substance. It is a purine alkaloid that blocks adenosine receptors, reducing drowsiness.

Camphor is a waxy terpene with a strong aromatic odor, obtained from the camphor laurel tree. It has been used …

Caprolactam is the monomer used to produce nylon 6, one of the most widely used synthetic polymers. Over 5 million …

Capsaicin is the chemical responsible for the heat in chili peppers. It activates TRPV1 pain receptors, producing a burning sensation …

Catechol is a dihydroxybenzene found in many natural polyphenols. It is used in photography, pharmaceutical synthesis, and as an antioxidant.

Chitosan is derived from chitin in crustacean shells and is the second most abundant natural polysaccharide after cellulose. It has …

Cholesterol is an essential structural component of cell membranes and a precursor to steroid hormones, bile acids, and vitamin D.

Citric acid is a weak organic acid found in citrus fruits. It is a key intermediate in the Krebs cycle …

Coenzyme A (CoA) is a coenzyme essential for synthesis and oxidation of fatty acids, and the citric acid cycle. Acetyl-CoA …

Congo red is an azo dye historically important as the first direct dye for cotton. In medicine, it is used …

Coumarin gives freshly cut hay and tonka beans their sweet vanilla-like scent. It is used in perfumery and as a …

Cysteine is a sulfur-containing amino acid critical for protein structure through disulfide bonds. It is used in food processing and …

Cytosine is a pyrimidine nucleobase that pairs with guanine in both DNA and RNA through three hydrogen bonds. In DNA, …

DDT was a revolutionary insecticide that helped eradicate malaria in many countries. It was banned in most nations after Rachel …

Diazepam (Valium) is one of the most prescribed benzodiazepines, used for anxiety, seizures, and muscle spasms. It was the world's …

DMT is one of the two main monomers used to produce PET plastic (the other being terephthalic acid). It is …

Dopamine is a catecholamine neurotransmitter that plays a central role in reward, motivation, and motor control. It is synthesized from …

EDTA is a powerful chelating agent that binds metal ions. It is used in medicine to treat heavy metal poisoning …

Ethylene carbonate is a cyclic carbonate used as a solvent in lithium-ion battery electrolytes. It has a high dielectric constant …

Ferrocene was the first sandwich compound discovered, with an iron atom sandwiched between two cyclopentadienyl rings. Its discovery revolutionized organometallic …

FAD is a redox-active coenzyme involved in many metabolic reactions, especially in the electron transport chain and citric acid cycle.

Fluorescein is a synthetic fluorescent dye that glows bright green under UV light. It is used in ophthalmology, water tracing, …

Folic acid (Vitamin B9) is essential for DNA synthesis and cell division. Mandatory food fortification has dramatically reduced neural tube …

Fructose is the sweetest naturally occurring sugar, found abundantly in fruits and honey. It is metabolized primarily in the liver.

Fumaric acid is the trans isomer of butenedioic acid and an intermediate in the citric acid cycle. It is used …

Galactose is a monosaccharide that combines with glucose to form lactose in milk. Galactosemia is a genetic inability to metabolize …

Glucose is the primary energy source for cells in all living organisms. It is a monosaccharide (simple sugar) and the …

Glutamic acid is a non-essential amino acid that is the most abundant excitatory neurotransmitter in the brain. Its sodium salt, …

Glutamine is the most abundant free amino acid in human blood and muscle tissue. It is conditionally essential during stress, …

Glycine is the simplest amino acid and the only one that is achiral (not optically active). It is a major …

Glycolic acid is the smallest alpha-hydroxy acid (AHA), widely used in skincare for chemical peeling. It has the best skin …

Glyphosate is the most widely used herbicide in the world, sold as Roundup. It kills plants by inhibiting an enzyme …

Guanine is a purine nucleobase that pairs with cytosine in both DNA and RNA through three hydrogen bonds. It was …

Histidine is a conditionally essential amino acid containing an imidazole side chain. It is the precursor to histamine and plays …

Hydroquinone is a depigmenting agent that inhibits melanin production. It is used in skin lightening products and as a photographic …

Ibuprofen is one of the world's most widely used nonsteroidal anti-inflammatory drugs (NSAIDs). Discovered in the 1960s, it is now …

Imidazole is an aromatic heterocycle found in the amino acid histidine. Many antifungal drugs contain imidazole rings.

Indigo is the oldest known vat dye, used to color blue jeans since 1873. Natural indigo was one of the …

Isoleucine is a branched-chain essential amino acid crucial for hemoglobin synthesis and blood sugar regulation.

Lactose is the primary sugar in milk, composed of glucose and galactose. About 65% of the global population has reduced …

Leucine is a branched-chain essential amino acid important for muscle protein synthesis. It is the most abundant amino acid in …

Lycopene is the red pigment in tomatoes and watermelons. It is one of the most potent antioxidant carotenoids and may …

Lysine is an essential amino acid critical for collagen formation, calcium absorption, and immune function. It is the most limiting …

Maleic acid is the cis isomer of butenedioic acid and a key industrial chemical. Its anhydride is one of the …

Maleic anhydride is a key industrial chemical used to make unsaturated polyester resins, coatings, and agricultural chemicals.

Malic acid is responsible for the sour taste of green apples. Its name derives from Latin 'malum' (apple) and it …

Maltose, or malt sugar, is a disaccharide formed from two glucose units. It is produced during the germination of grains, …

Mannitol is a sugar alcohol used medically to reduce intracranial and intraocular pressure. It occurs naturally in seaweed, mushrooms, and …

Melamine is used to produce melamine resin (used in laminates like Formica) and melamine foam (Magic Eraser). It gained infamy …

Melatonin is a hormone produced by the pineal gland in response to darkness that regulates the circadian rhythm (sleep-wake cycle). …

Menthol is a cyclic monoterpene alcohol that activates cold-sensitive TRPM8 receptors, producing a cooling sensation. It is extracted from mint …

Metformin is the most prescribed medication for type 2 diabetes worldwide. Originally derived from French lilac, it is now being …

Methionine is an essential sulfur-containing amino acid that serves as the initiator of protein synthesis in all eukaryotic cells.

Methylene blue is a synthetic dye with important medical applications. It is used to treat methemoglobinemia and is on the …

Morphine is the prototypical opioid analgesic, isolated from opium in 1804. It remains the gold standard against which all painkillers …

Naphthalene is a polycyclic aromatic hydrocarbon with a characteristic mothball odor. It consists of two fused benzene rings.

Naproxen is an NSAID with a longer duration of action than ibuprofen, allowing twice-daily dosing. It was prescription-only until 1994 …

Niacin, or Vitamin B3, is essential for metabolism. Its deficiency causes pellagra, which was epidemic in the American South in …

NAD+ is a coenzyme central to metabolism, found in every living cell. It carries electrons in redox reactions and is …

Omeprazole was the first proton pump inhibitor (PPI) and revolutionized the treatment of acid reflux and stomach ulcers. It reduces …

Oxalic acid is the simplest dicarboxylic acid, found naturally in many plants including rhubarb and spinach. It is used as …

Oxaloacetate is essential for the citric acid cycle, condensing with acetyl-CoA to form citrate. It also serves as a gluconeogenesis …

Palmitic acid is the most common saturated fatty acid found in animals, plants, and microorganisms. It was first discovered in …

Paracetamol (acetaminophen) is the most commonly used medication for pain and fever worldwide. Its exact mechanism of action remains partially …

Penicillin G was the first antibiotic discovered, by Alexander Fleming in 1928 from the mold Penicillium notatum. It works by …

PETN is one of the most powerful commonly available explosives and the active component of detonating cord. It is also …

Phenol (carbolic acid) was the first surgical antiseptic used by Joseph Lister in 1865. It is now used primarily in …

Phenolphthalein is the most famous acid-base indicator, turning pink in basic solutions. It was also used as a laxative until …

Phenylacetic acid is an organic acid with a honey-like odor that is a precursor to penicillin G. It is a …

Phenylalanine is an essential aromatic amino acid and a precursor to tyrosine, dopamine, and adrenaline. People with phenylketonuria (PKU) cannot …

Phthalic acid is an aromatic dicarboxylic acid primarily used to make phthalate plasticizers and polyester resins. Its anhydride is a …

Phthalic anhydride is one of the most important industrial organic chemicals, used to make plasticizers, alkyd resins, and dyes.

Proline is unique among the standard amino acids as it has a cyclic side chain bonded to both the nitrogen …

Purine is the parent compound of adenine and guanine, two of the five nucleobases in DNA and RNA. Purines are …

Pyridoxine, or Vitamin B6, is involved in over 100 enzyme reactions in amino acid metabolism. It is one of the …

RDX is a powerful military explosive more potent than TNT. It is a key component of C-4 plastic explosive and …

Resorcinol is a dihydroxybenzene isomer used in dermatology to treat acne, eczema, and dandruff. It is also used in adhesive …

Retinol (vitamin A) is a fat-soluble vitamin essential for vision, immune function, and cell growth. It is the immediate precursor …

Riboflavin (vitamin B2) is an essential water-soluble vitamin that functions as a component of the coenzymes FAD and FMN. These …

Saccharin was the first artificial sweetener, discovered in 1879. It is about 300-400 times sweeter than sugar with a slightly …

Salicylic acid is derived from willow bark and is the precursor to aspirin. It is widely used in skincare products …

Serine is a non-essential amino acid important for phospholipid synthesis and protein phosphorylation. Its name derives from the Latin word …

Serotonin is a monoamine neurotransmitter primarily found in the gastrointestinal tract (about 90%), blood platelets, and central nervous system. It …

Sodium alginate is a natural polysaccharide from brown seaweed used as a thickener, gelling agent, and in molecular gastronomy for …

Sodium dodecylbenzenesulfonate (SDBS) is the most widely used anionic surfactant in household detergents. It replaced soap for most cleaning applications.

Sorbitol is a sugar alcohol found naturally in many fruits. It is used as a low-calorie sweetener, humectant, and pharmaceutical …

Stearic acid is one of the most common saturated fatty acids found in animal and vegetable fats. It is widely …

Stevioside is a natural sweetener extracted from the leaves of Stevia rebaudiana, about 250-300 times sweeter than sugar. It has …

Succinic acid is a dicarboxylic acid that plays a key role in the citric acid cycle. It is increasingly produced …

Sucralose is an artificial sweetener made by chlorinating sucrose, about 600 times sweeter than sugar. It passes through the body …

Sucrose (table sugar) is a disaccharide composed of glucose and fructose. It is extracted from sugar cane and sugar beets.

Tartaric acid occurs naturally in grapes and is a key component of wine. It is used in food as an …

Terephthalic acid (TPA) is the most widely produced aromatic dicarboxylic acid, with over 80 million tonnes produced annually for PET …

tert-Butanol is unique among butanol isomers as it is a solid near room temperature. It is used as a solvent …

Theobromine is the primary alkaloid in cocoa and chocolate. It is the reason chocolate is toxic to dogs, who metabolize …

Theophylline is a methylxanthine found in tea and used to treat asthma by relaxing bronchial smooth muscle. It is chemically …

Thiamine, or Vitamin B1, is essential for glucose metabolism. Its deficiency causes beriberi, a disease that plagued Asian populations dependent …

Threonine is an essential amino acid important for immune function, gut health, and collagen production. It was the last of …

Thymine is a pyrimidine nucleobase found exclusively in DNA, where it pairs with adenine through two hydrogen bonds. It is …

Thymol is a natural monoterpene phenol found in thyme oil. It has been used as an antiseptic since ancient Egyptian …

TNT is a yellow solid explosive that is one of the most commonly used military and commercial explosives. Despite being …

Tryptophan is an essential amino acid that the body cannot synthesize. It is the biosynthetic precursor to serotonin (the 'happy …

Tyrosine is a non-essential amino acid and precursor to dopamine, adrenaline, noradrenaline, and melanin. Its name comes from the Greek …

Uracil is a pyrimidine nucleobase found in RNA but not DNA. It pairs with adenine through two hydrogen bonds. In …

Urea is the main nitrogen-containing waste product of protein metabolism in mammals. It was the first organic compound synthesized from …

Uric acid is the end product of purine metabolism in humans. High blood levels cause gout — painful crystal deposits …

Valine is a branched-chain essential amino acid named after the plant valerian. It is important for muscle metabolism and tissue …

Vanillin is the primary flavor compound in vanilla and the world's most popular flavoring agent. Over 85% of commercial vanillin …

Xylitol is a sugar alcohol with a sweetness similar to sucrose but 40% fewer calories. It is widely used in …