脯氨酸杂质2 货号:P041002 英文名:Proline Impurity 2 同义词:54615-47-3(HCl);(S)-4-oxopyrrolidine-2-carboxylic acid CAS号:4347-18-6 分子式:C5H7NO3 分子量:129.11 询价订购