(organic chemistry, countable) Any of four isomeric derivatives C₇H₇NO₃ of salicylic acid that have a single amino group.

(organic chemistry) The simplest aromatic sulfonic acid, a colourless deliquescent sheet crystal or white wax solid that is soluble in water and ethanol.

undecylenic acid

A toxin that accumulates in bivalves and causes diarrhetic shellfish poisoning.

(organic chemistry) A synthetic short-chain alkane sulfonic acid used in the manufacture of anionic surfactants.

(organic chemistry) The dicarboxylic acid HOOC-N=N-COOH derived from hydrazine

(organic chemistry) Any derivative of an amino acid that has formally lost two hydrogen atoms to form a double bond

(organic chemistry) Any acid derivative of a diene, especially such a carboxylic acid

(organic chemistry) trifluoromethanesulfonic acid

(organic chemistry) The very strong sulfonic acid CF₃SO₃H that is used in organic synthesis, where it is known as triflic acid