(biochemistry) A nucleotide composed of thymine, ribose and phosphoric acid.

(organic chemistry) Any of several phenyl derivatives of butanoic acid, but especially 4-phenylbutanoic acid, many of whose derivatives have biochemical activity

(organic chemistry) A white crystalline aromatic acid soluble in many primary alcohols, which can be prepared by heating a mixture of benzil, alcohol, and potassium hydroxide.

(organic chemistry) The aromatic amino acid 2-aminobenzoic acid that has biological activity, and is used in organic synthesis.

(organic chemistry) Any of three isomeric aromatic carboxylic acid methoxybenzoic acid found in anise; they are mildly antiseptic

(organic chemistry) The monoterpenoid carboxylic acid formed by the oxidation of citronellal

(organic chemistry) The cyano derivative of acetic acid NC-CH₂-COOH used in the synthesis of barbiturates and other compounds

(inorganic chemistry) The strong acid ClSO₂OH obtained from sulfuric acid by the replacement of a hydroxyl group with a chlorine atom; it is used in the preparation of sulfonic acids

(inorganic chemistry) The unstable and reactive acid, ClSO₂OH used in the manufacture of many organic compounds

(organic chemistry) The aromatic carboxylic acid C₆H₅-CH=CH-COOH obtained from cinnamon; it is used in perfumery etc