(chemistry) any oxyacid of a halogen of general formula HOX.

(organic chemistry) A crystalline sulfonic acid, HOC₁₀H₅(SO₃H)₂, derived from beta naphthol and used as a dye intermediate; 2-naphthol-3,6-disulfonic acid.

(chemistry) a phenolic quinone that is the main constituent of cochineal

(chemistry) Any of several isomers of hydroxyisopropylmethylbenzoic acid, formally derived from thymol; one of the constituents of tannic acid.

a red, crystalline dye, of uncertain composition, obtained from sandalwood

(organic chemistry) a carboxylic acid that also contains a hydroxy group

(chemistry) the simplest alpha-hydroxy acid, hydroxy-acetic acid, found in sugar cane and unripe grapes; used in cosmetics etc

(organic chemistry) Any carotenoid containing a carboxylic acid functional group.

(pharmacology) A synthetic quinolone antibacterial which inhibits the multiplication of bacteria, used to treat genitourinary infections.

any food additive used to control pH