L-Serine by MP Biomedicals is a high purity amino acid. This is an -amino acid which contains an -amino group, a carboxyl group, and a side chain consisting of a hydroxymethyl group, classifying it as a polar amino acid. This preparation is available as a white powder which is soluble in water. It is classified as non-essential to the human diet, since it can be synthesized in the body from other metabolites, including glycine. It is invovled in the biosynthesis of purines and pyrimidines, and is the precursor to several amino acids including glycine and cysteine, as well as tryptophan in bacteria. CAS No. 56-45-1 Quantity Provided: 25 gm per pack Molecular Formula: C3H7NO3 Molecular Weight: 105.09 Soluble in waterL-Serine is widely used in chemical and biological sectors. L-serine is used in the influence of pulsed applications of serine on polyglucose synthesis by Fusobacterium nucleatum cultures. Supplementation of minimal media with serine has been reported to restore growth in Escherichia coli that lack the PII and GlnK genes. L-serine is in a FDA-approved human clinical trial, as a possible treatment for Amyotrophic Lateral Sclerosis (ALS).