(inorganic chemistry) The most commonly encountered heteropoly acid, widely used in heterogeneous catalysts.

(organic chemistry) An intermediate in the catabolism of L-histidine, transformed in the liver by urocanate hydratase (or urocanase) into 4-imidazolone-5-propionic acid and subsequently to glutamic acid.

The naturally occurring form of tartaric acid, as opposed to levotartaric acid and mesotartaric acid.

Oxaloacetic acid.

Mecoprop, a common herbicide.

Alternative spelling of methanesulfonic acid

A yellow liquid obtainable from the shell of the cashew nut (Anacardium occidentale), closely related to urushiol, and also causing itchiness like urushiol.

(slang) to take LSD.

(organic chemistry) Diethylene triamine pentaacetic acid (DTPA), a polyamino carboxylic acid consisting of a diethylenetriamine backbone modified with five carboxymethyl groups, used as a chelating agent to treat radioactive contamination.

peracetic acid