Hypotaurine is a sulfinic acid that is an intermediate in the biosynthesis of taurine.Like taurine, it also acts as an endogenous neurotransmitter via action on the glycine receptors.In mammals, the biosynthesis of hypotaurine from cysteine occurs in the pancreas.Cysteine sulfinic acid, in turn, is decarboxylated by sulfinoalanine decarboxylase to form hypotaurine.[3] This drug article relating to the nervous system is a stub.
Hypotaurine (3) is an intermediate in the conversion of cysteine (1) to taurine (4).