Cetirizine Methyl Ester

Levocetirizine IMpurity: IMpurity I

Methyl 2-[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetate

[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-Acetic Acid Methyl Ester