(organic chemistry) The betalain dicarboxylic acid (S-(E))-1,2,3,4-tetrahydro-4-(oxoethylidene)-2,6-pyridinedicarboxylic acid

(chemistry) eleostearic acid in the form of its glycerol ester

(organic chemistry, obsolete) An acid with chemical formula C₁₀H₈O₄, found combined with potash in the alkaline liquor obtained by heating the balsam of angelica with caustic potash.

(chemistry) 1,1-trimethylenedicarboxylic acid.

(chemistry)

(organic chemistry, obsolete) A tannic acid obtained from the bark of Cinchona nova or Cinchona surinamensis, resembling quinotannic acid.

urushiol

(organic chemistry) A levorotatory acid with chemical formula C₇H₁₂Cl₂O₆, found in the urine of a person who has taken chloral hydrate.

An impure form of pyromucic acid

A fatty acid found in the seed oil of Chinese violet cress (Orychophragmus violaceus)