API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Metoprolol

EP Impurity A

(2RS)-1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]propan-2-ol Metoprolol-EP-Impurity-A
Metoprolol

EP Impurity C

4-[(2RS)-2-hydroxy-3-[(1-methylethyl)amino]propoxy]benzaldehyde Metoprolol-EP-Impurity-C
Metoprolol

EP Impurity B

4-(2-methoxyethyl)phenol Metoprolol-EP-Impurity-B
Metoprolol

EP Impurity O

1,1’-[(1-methylethyl)imino]bis[3-[4-(2-methoxyethyl)phenoxy]propan-2-ol] Metoprolol-EP-Impurity-O
Metoprolol

EP Impurity G

2-(4-hydroxyphenyl)ethanol Metoprolol-EP-Impurity-G
Metoprolol

EP Impurity D

(2RS)-3-[4-(2-methoxyethyl)phenoxy]propane-1,2-diol Metoprolol-EP-Impurity-D