(organic chemistry) Any organic oxyacid having a general formula R-SO₂SH

(organic chemistry) Any sulfonic acid derived from camphor, but especially d-camphorsulfonic acid (known as Reychler's acid) classically used to resolve stereoisomers

(organic chemistry) A secondary bile acid that is a metabolic product of intestinal bacteria

(organic chemistry) A neurotoxin associated with some algal blooms

(organic chemistry) An isomer of nicotinic acid, pyridine-4-carboxylic acid

(biochemistry) Any of various lipid derivatives of teichoic acids

(biochemistry) The agent 3-piperidinecarboxylic acid that acts upon GABA transporters

(biochemistry) A metabolite of tryptophan that has antiexcitotoxic and anticonvulsant activity.

(inorganic chemistry) A heteropoly acid formally derived from phosphoric acid and tungstic acid; it is used as an analytical reagent

(inorganic chemistry) Any of a family of mixed oxyacids of metals (such as tungsten) and nonmetals (such as phosphorus)