Cetirizine Impurities

High-purity reference standards for HPLC analysis, stability studies, and quality control.

Comprehensive Offerings

Alfa Omega Pharma provides certified reference substances, degradation products, and validated analytical methods fully compliant with pharmacopeial guidelines (USP, EP, ICH).

Custom Synthesis

We specialize in the custom synthesis of Impurities, Metabolites, and stable-labelled isotopes tailored to your specific research and regulatory needs.

Key Available Impurities & Derivatives:

Cetirizine Impurity A (RS)1-[(4- chlorophenyl)(phenyl)methyl]piperazine
Cetirizine Impurity B (RS){4-[(4- chlorophenyl)(phenyl)methyl]piperazin- 1-yl}acetic acid
Cetirizine Impurity C {2-[4-(RS)(2- chlorobenzyl)(phenyl)methyl)piperazin- 1-yl]ethoxy}acetic acid
Cetirizine Impurity D 1,4 Bis-[(4- chlorophenyl)(phenyl)methyl]piperazine
Cetirizine Impurity E (RS)-2-[2-[2[4-[(4-Chlorophenyl)phenyl methyl]piperazin-1-yl]ethoxy]ethoxy]acetic acid (Ethoxy citrizine)
Cetirizine Impurity F [2-[4-(Diphenylmethyl)piperazin-1- yl]ethoxy]acetic Acid
Cetirizine Impurity G 2-{4-(RS)[(4- chlorophenyl)(phenyl)methyl]piperazin- 1-yl}ethanol
Cetirizine Isopropyl ester Isopropyl {2-[4-(RS)(4- chlorobenzyl)phenyl methyl]piperazin-1- yl]ethoxy}acetate
Cetirizine Ethyl ester Ethyl {2-[4-(RS)(4-chlorobenzyl)phenyl methyl]piperazin-1-yl]ethoxy}acetate
4-Chlorobenzhydrol (4-chlorophenyl)(phenyl)methanol
4-Chlorobenophenone (4-chlorophenyl)(phenyl)methanone
Cetirizine Ethyl Ester Impurity
Cetirizine Methyl Ester Impurity
Cetirizine Impurity-A/ Levocetirizine Impurity-A
Cetirizine EP Impurity B (Cetirizine Impurity-B)
Cetirizine EP Impurity C (Cetirizine Impurity C)
Cetirizine EP Impurity D (Cetirizine Impurity-D)
Cetirizine EP Impurity E (Cetirizine Impurity E)
Cetirizine Impurity F
Cetirizine EP Impurity G (Cetirizine Impurity G)
Cetirizine Glycerol Ester Impurity HCl
Cetirizine N-Oxide Di HCl
Cetirizine propane diol ester/(R)- Cetirizine Polyethylene Glycol Ester (Cetirizine Propylene Glycol Ester-1)
Cetirizine Dihydrochloride
Cetirizine (N-1)
Cetirizine Lactose Ester Impurity
Quaternary Amine impurity/Cetirizine Imp
Cetirizine Impurity (n-1) stg
Cetirizine impurity E
N-Nitroso Cetirizine EP Impurity - A