(chemistry) an unstable acid, HClO₂, known only in solution or as its salts, the chlorites; it is a strong oxidizing agent

(inorganic chemistry) The acid H₂As(=O)OH. / (organic chemistry) Any hydrocarbyl derivative of this acid.

(biochemistry) Any of a group of polyhydroxy dicarboxylic acids derived from an aldose by oxidation at both terminal carbon atoms.

(chemistry) a polymeric lactone of variable composition obtained by heating tartaric acid; used to prevent precipitation in wine

(organic chemistry) Any of a class of polyhydroxy carboxylic acids derived from an aldose by oxidation of the aldehyde functional group.

(organic chemistry) Any organic compound that has both a carboxylic acid and an amide functional group.

(chemistry) a phenolic carboxylic acid, 3,4,5-trihydroxybenzoic acid, found in galls, tea, the bark of some trees etc; a constituent of tannin

(chemistry) The acid H₂AsOH derived from arsine. / (chemistry) Any of its hydrocarbyl derivatives.

(organic chemistry) Any organic derivative of H₂N⁺O⁻OH, especially the alkylidene derivatives R₂C=N⁺O⁻OH - the nitronic acids.

(inorganic chemistry) the acid HAs(OH)₂ derived from arsine / (organic chemistry) any of its hydrocarbyl derivatives