(biochemistry) A 9-carbon atom amino carbohydrate, 5-amino-3,5-dideoxy- D-glycero-D-galacto-non-2-ulosonic acid, many of whose derivatives are found in nature, mostly as glycoproteins and gangliosides

(biochemistry) Any of a group of amino carbohydrates that are substituted forms of neuraminic acid; they are components of glycoproteins and mucoproteins

(biochemistry) A heterocyclic dicarboxylic acid isolated from certain red algae; used as an anthelmintic in Japan.

(pharmacology) The acetate ester of salicylic acid (aspirin)

(organic chemistry) A white crystalline organic acid, 2-hydroxybenzoic acid, C₆H₄(OH)(COOH), used in the production of aspirin and other industrial chemicals.

(organic chemistry) A white crystalline dicarboxylic acid, C₄H₈(COOH)₂; it has many industrial applications; when condensed with hexamethylene diamine it produces nylon.

(organic chemistry) A clear colourless organic acid, CH₃COOH, formed by the bacterial oxidation of ethanol through acetic fermentation; it is used as a solvent and has very many industrial applications; it is the major acidic component of vinegar.

(inorganic chemistry) A corrosive colourless liquid, HBrO₃; it is a powerful oxidizing agent, and is used in the manufacture of pharmaceuticals and some dyes; it reacts with bases to form bromates.

(organic chemistry) A fatty acid, CH₃(CH₂)₈COOH, obtained from animal fats, and used in the manufacture of perfumes and flavours.

(organic chemistry) An organic compound, C₆H₁₂O₇, formed by oxidizing the aldehyde functional group of glucose into a carboxylic acid; used as a food additive; any glucosyl derivative of this compound