甲基多巴杂质4(盐酸盐) 货号:M044004A 英文名:Methyldopa Impurity 4(Hydrochloride) 同义词:左旋多巴杂质4(盐酸盐);(S)-methyl 2-amino-3-(3-hydroxy-4-methoxyphenyl)-2-methylpropanoate hydrochloride CAS号:N/A 分子式:C12H17NO4.HCl 分子量:239.27 36.46 黄金现货 询价订购