Formulation: A solid
Formal Name: S-(2-amino-2-carboxyethyl)-L-homocysteine-3,3,4,4-d4
Purity: ≥99% deuterated forms (d1-d4)
Formula Markup: C7H10D4N2O4S
Formula Weight: 226,3
Shelf life (days): 1460
Notes: Cystathionine-d4 is intended for use as an internal standard for the quantification of cystathionine (Item Nos. 17819 / 16061) by GC- or LC-MS. Cystathionine is an intermediate in the biosynthesis of cysteine that is composed of homocysteine and serine.{17812,26041} It has four potential isomers, L-cystathionine, D-cystathionine, L-allocystathionine, and D-allocystathionine.{65169} Dietary administration of L-allocystathionine (0.74%) or the naturally occurring L-cystathionine (0.74%) substitute for cystine and increase the body weight of growing rats.