Specifications   Product Name： 苄氧羰基-D-2,4-二氨基丁酸 Cbz-D-2,4-diaminobutyric acid Cbz-D-Daba-OH Molecular Formula： C12H16N2O4 Molecular Weight: 1252.27 CAS: 70882-66-5 Structural Formula：   Items Specifications   Appearance： 白色或类白色粉末 White or off-white powder   Assay: ≥98.0% Optical activity： +9±1°(c =1  in **) Melting Point (℃): 192-196 ºC ** content: ≤0.5%