L-Phenylalanine   L-苯丙氨酸   Synonym  (S)-2-Amino-3-phenylpropionic acid Molecular Formula C6H5CH2CH(NH2)CO2H Molecular Weight165.19 CAS Number 63-91-2 Properties grade ……………………………………………………….reagent grade assay………………………………………………………..≥98% mp ……………………………………………………………270-275 °C (dec.)(lit.)