维A酸EP杂质C 货号:T093003 英文名:Tretinoin EP Impurity C 同义词:(2Z,4Z,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid CAS号:3555-80-4 分子式:C20H28O2 分子量:300.44 询价订购