Pharmaceutical IntermediateChina 4- (4-Hydroxybutyl) Benzoic Acid Methyl Ester CAS No. 123910-88-3, Find details about China 4- (4-Hydroxybutyl) Benzoic Acid Methyl Ester, CAS No. 123910-88-3 from 4- (4-Hydroxybutyl) Benzoic Acid Methyl Ester CAS No. 123910-88-3