API |
IMPURITY |
CHEMICAL NAME |
STRUCTURE |
Doxazosin |
EP Impurity A |
(2RS)-2,3-dihydro-1,4-benzodioxine-2-carboxylic acid |  |
Doxazosin |
EP Impurity E |
2,4-dichloro-6,7-dimethoxyquinazoline |  |
Doxazosin |
EP Impurity B |
1-[(2RS)-2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl]piperazine |  |
Doxazosin |
EP Impurity G |
6,7-dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine |  |
Doxazosin |
EP Impurity H |
2,2’-(piperazine-1,4-diyl)bis(6,7-dimethoxyquinazolin-4-amine) |  |
Doxazosin |
EP Impurity F |
4-amino-2-chloro-6,7-dimethoxy quinazoline |  |