Phosphatidylserine manufacturer / supplier in China, offering (S) -3-Amino-3-Phenylpropionic Acid 40856-44-8 Pharmaceutical Intermediates Nutrition Quality, High Purity (S) -Beta-Phenylalanine CAS 40856-44-8 for Pharmaceutical Use, Sialic Acid Pharmaceutical Intermediates: N-Acetylneuraminic Acid Methyl Ester CAS22900-11-4 and so on.