API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Promethazine impurity D

Promethazine impurity D

 (2RS)-N,N-Dimethyl-1-(10H-phenothiazin-10-yl)propan-2-amine S-oxide 
Promethazine impurity C

Promethazine impurity C

 2RS)-N-Methyl-1-(10H-phenothiazin-10-yl)propan-2-amine HCl Promethazine impurity C
Promethazine impurity B

Promethazine impurity B

 2RS)-N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine hydrochloride Promethazine impurity B
Promethazine impurity A

Promethazine impurity A

 Phenothiazine Promethazine impurity A