CAS # 4587-33-1 Synonyms: Boc-L-Asn-ONp MDL No.: MFCD00056109 Melting Point: 140-155 ºC Molecular Formula: C15H19N3O7 Molecular Weight: 353.3 Optical Rotation: [a]D20 = -38 ± 2º (C=1 in DMF) Purity Limit: 98% (HPLC) Storage Temp: Store at 0-8 °C Appearance: White to off-white powder