Legal number: CAS RN) : 72-18-4 EINECS no. : 200-773-6

　　Molecular formula: C₅H₁₁NO₂

　　Molecular weight: 117.15

　　Purpose: is human body essential amino acids, medicine, used as one of the amino acid composition of infusion, and synthesis of new drugs, also can be used as food additive, nutrition supplements.

　　Standard: FCCIV USP24 USP26 AJI92