API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Theophylline

EP Impurity C

N-(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide Theophylline-EP-Impurity-C
Theophylline

EP Impurity A

caffeine
Theophylline

EP Impurity F

etofylline