API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Trimethoprim

EP Impurity K

aniline. Trimethoprim-EP-Impurity-K
Trimethoprim

EP Impurity H

methyl 3,4,5-trimethoxybenzoate Trimethoprim-EP-Impurity-H
Trimethoprim

EP Impurity J

3,4,5-trimethoxybenzoic acid Trimethoprim-EP-Impurity-J