Background:

L-Cystathionine is a key nonprotein amino acid related to metabolic conditions.

L-Cystathionine is an important metabolic intermediate in the L-cysteine transsulfuration pathway from L-methionine via L-homocysteine in mammalian tissues[1].

[1]. Amino Y, et al. Synthesis and evaluation of L-cystathionine as a standard for amino acid analysis. Biosci Biotechnol Biochem. 2017 Jan;81(1):95-101.