API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Doxazosin Mesilate

EP Impurity A

(2RS)-2,3-dihydro-1,4-benzodioxine-2-carboxylic acid Doxazosin Mesilate_EP Impurity A
Doxazosin Mesilate

EP Impurity D

6,7-dimethoxyquinazoline-2,4(1H,3H)-dione Doxazosin Mesilate_EP Impurity D
Doxazosin Mesilate

EP Impurity E

2,4-dichloro-6,7-dimethoxyquinazoline Doxazosin Mesilate_EP Impurity E