Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 312-84-5, Whether you call it D-Serine, D-2-Amino-3-hydroxypropanoic Acid or (R)-2-Amino-3-hydroxypropionic Acid you can be assured the D-Serine products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.