3,4,5-Trimethoxybenzoic Acid Methyl Ester 99.5%. CAS 1916-07-0 Used as intermediate for TMP (Trimethoprim) 3,4,5-Trimethoxybenzoic Acid Methyl Ester 99.5%Uses: 3,4,5-Trimethoxybenzoic Acid Methyl Ester is used as intermediate for TMP (Trimethoprim). 100kg 3,4,5-Trimethoxybenzoic Acid Methyl Ester 99.5%; Methyl 3,4,5-Trimethoxybenzoate, CAS 1916-07-0, EINECS 217-629-2