API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Flunarizine

EP Impurity A

1-[bis(4-fluorophenyl)methyl]piperazine Flunarizine-EP-Impurity-A
Flunarizine

EP Impurity B

1-[(RS)-(4-fluorophenyl)phenylmethyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine Flunarizine-EP-Impurity-B
Flunarizine

EP Impurity C

1-[(RS)-(2-fluorophenyl)(4-fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine Flunarizine-EP-Impurity-C