This document outlines the chemical structures of bisoprolol fumarate, a beta blocker, and its various impurities according to European Pharmacopoeia specifications. It provides the chemical names and structures for bisoprolol fumarate and 12 of its impurities which are designated as Impurities A through U.

1. Bisoprolol Fumarate Impurities
O
OH
H
N
O
O
OH
O
O
HO
O
OH
H
N
HO
O
OH
H
N
O
O
O O
OH
H
N
OH
H
N
O
O
OH
H
N O
OH
H
N
O
H
N
O
O
O
OH
H
N
OO
O
O
OH
H
N
O
O
O
O
OH
H
N
O
OH
O
O
O
OH
H
N
O
O
O
OH
H
N
O
O
O
OH
H
N
O
O
N
O
O
O
O
N
HO
O
Bisoprolol Fumarate
CAS No: 104344-23-2
Bisoprolol EP Impurity A Bisoprolol EP Impurity B Bisoprolol EP Impurity C
Bisoprolol EP Impurity D Bisoprolol EP Impurity E Bisoprolol EP Impurity L
Bisoprolol EP Impurity G Bisoprolol EP Impurity K Bisoprolol EP Impurity M
Bisoprolol EP Impurity RBisoprolol EP Impurity QBisoprolol EP Impurity N
Bisoprolol EP Impurity T Bisoprolol EP Impurity U