cetirizine and its Impurities

Cetirizine is sold under the brand name Zyrtec among others, is a second generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria.. Reference standards of Cetirizine API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 78 results for cetirizine Impurities
PA 30 51000

Cetirizine - API

Cetirizine


  • Catalogue No.:PA 30 51000

  • CAS :

    83881-51-0

  • Molecular Formula : C21H25ClN2O3

  • Molecular Weight : 388.89

PA 30 51510

2-(2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)ethanol Hydrochloride;

2-(2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)ethanol Hydrochloride;


  • Catalogue No.:PA 30 51510

  • CAS :

    1244-76-4

  • Molecular Formula : C21H28Cl2N2O2

  • Molecular Weight : 411.37

PA 30 51520

Cetirizine Methyl Ester

Cetirizine Methyl Ester


  • Catalogue No.:PA 30 51520

  • CAS :

    83881-46-3

  • Molecular Formula : C22H27ClN2O3

  • Molecular Weight : 402.91

PA 30 51530

((2R,3R,4S,5R,6S)-3,4,5-Trihydroxy-6-(((2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)tetrahydro-2H-pyran-2-yl)methyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate Hydrochloride

((2R,3R,4S,5R,6S)-3,4,5-Trihydroxy-6-(((2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)tetrahydro-2H-pyran-2-yl)methyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate Hydrochloride


  • Catalogue No.:PA 30 51530

  • CAS :

    NA

  • Molecular Formula : C33H46Cl2N2O13

  • Molecular Weight : 749.63

PA 03 36010

Cetirizine - Impurity A

1-[(4-Chlorophenyl)phenylmethyl]piperazine


  • Catalogue No.:PA 03 36010

  • CAS :

    303-26-4

  • Molecular Formula : C17H19ClN2

  • Molecular Weight : 286.80

PA 03 36020

Cetirizine - Impurity B

De(carboxymethoxy) Cetirizine Acetic Acid


  • Catalogue No.:PA 03 36020

  • CAS :

    113740-61-7

  • Molecular Formula : C19H21ClN2O2

  • Molecular Weight : 344.84

PA 03 36030

Cetirizine - Impurity C

Cetirizine 2-Chloro Impurity Dihydrochloride


  • Catalogue No.:PA 03 36030

  • CAS :

    83881-59-8

  • Molecular Formula : C21H27Cl3N2O3

  • Molecular Weight : 461.81

PA 03 36031

Cetirizine - Impurity C (Freebase)

Cetirizine 2-Chloro Impurity


  • Catalogue No.:PA 03 36031

  • CAS :

    NA

  • Molecular Formula : C21H25ClN2O3

  • Molecular Weight : 388.89

PA 03 36040

Cetirizine - Impurity D

1,4-Bis[(4-chlorophenyl)phenylmethyl]piperazine Dihydrochloride


  • Catalogue No.:PA 03 36040

  • CAS :

    856841-95-7

  • Molecular Formula : C30H30Cl4N2

  • Molecular Weight : 560.38

PA 03 36050

Cetirizine - Impurity E

Hydroxyzine Acetic Acid Dihydrochloride


  • Catalogue No.:PA 03 36050

  • CAS :

    83881-56-5

  • Molecular Formula : C23H31Cl3N2O4

  • Molecular Weight : 505.86

PA 03 36051

Cetirizine - Impurity E (Freebase)

Hydroxyzine Acetic Acid


  • Catalogue No.:PA 03 36051

  • CAS :

    682323-77-9

  • Molecular Formula : C23H29ClN2O4

  • Molecular Weight : 432.94

PA 03 36060

Cetirizine - Impurity F

Deschloro Cetirizine Dihydrochloride


  • Catalogue No.:PA 03 36060

  • CAS :

    83881-54-3

  • Molecular Formula : C21H28Cl2N2O3

  • Molecular Weight : 427.36

PA 03 36061

Cetirizine - Impurity F (Freebase)

Deschloro Cetirizine


  • Catalogue No.:PA 03 36061

  • CAS :

    83881-53-2

  • Molecular Formula : C21H26N2O3

  • Molecular Weight : 354.44

PA 03 36070

Cetirizine - Impurity G

2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethanol Dihydrochloride


  • Catalogue No.:PA 03 36070

  • CAS :

    164726-80-1

  • Molecular Formula : C19H25Cl3N2O

  • Molecular Weight : 403.77

PA 03 36071

Cetirizine - Impurity G (Freebase)

2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethanol


  • Catalogue No.:PA 03 36071

  • CAS :

    109806-71-5

  • Molecular Formula : C19H23ClN2O

  • Molecular Weight : 330.85

PA 03 36510

Isopropyl Ester of Cetirizine

Isopropyl Ester of Cetirizine


  • Catalogue No.:PA 03 36510

  • CAS :

    324047-27-0

  • Molecular Formula : C24H31ClN2O3

  • Molecular Weight : 430.97

PA 03 36520

4-Chlorobenzhydrol

4-Chlorobenzhydrol


  • Catalogue No.:PA 03 36520

  • CAS :

    119-56-2

  • Molecular Formula : C13H11ClO

  • Molecular Weight : 218.68

PA 03 36530

4-Chlorobenzophenone

4-Chlorobenzophenone


  • Catalogue No.:PA 03 36530

  • CAS :

    134-85-0

  • Molecular Formula : C13H9ClO

  • Molecular Weight : 216.66

PA 03 36540

Cetirizine N-Oxide

Cetirizine N-Oxide


  • Catalogue No.:PA 03 36540

  • CAS :

    1076199-80-8

  • Molecular Formula : C21H25ClN2O4

  • Molecular Weight : 404.89

PA 03 36550

Ethyl Ester of Cetirizine Dihydrochloride

Ethyl Ester of Cetirizine Dihydrochloride


  • Catalogue No.:PA 03 36550

  • CAS :

    NA

  • Molecular Formula : C23H31Cl3N2O3

  • Molecular Weight : 489.86

PA 03 36560

D-Carnitine

D-Carnitine


  • Catalogue No.:PA 03 36560

  • CAS :

    541-14-0

  • Molecular Formula : C7H15NO3

  • Molecular Weight : 161.2

PA 03 36570

Methyl Ester of Cetirizine Dihydrochloride

Methyl Ester of Cetirizine Dihydrochloride


  • Catalogue No.:PA 03 36570

  • CAS :

    83881-48-5

  • Molecular Formula : C22H29Cl3N2O3

  • Molecular Weight : 475.84

PA 03 36580

Cetirizine Ethyl Ester

Cetirizine Ethyl Ester


  • Catalogue No.:PA 03 36580

  • CAS :

    246870-46-2

  • Molecular Formula : C23H29ClN2O3

  • Molecular Weight : 416.94

PA 03 36590

Cetirizine Lactose Ester

Cetirizine Lactose Ester


  • Catalogue No.:PA 03 36590

  • CAS :

    NA

  • Molecular Formula : C33H45ClN2O13

  • Molecular Weight : 713.17

PA 03 36600

Cetirizine Lactose Ester Sulfate

Cetirizine Lactose Ester Sulfate


  • Catalogue No.:PA 03 36600

  • CAS :

    NA

  • Molecular Formula : C33H47ClN2O17S

  • Molecular Weight : 811.25

PA 03 36610

Cetirizine Polyethylene Glycol Ester

Cetirizine Polyethylene Glycol Ester


  • Catalogue No.:PA 03 36610

  • CAS :

    1509941-93-8

  • Molecular Formula : C21H25ClN2O3[C2H4O]n

  • Molecular Weight : 432.94

PA 03 36620

Cetirizine 6,6'-O-Lactose Ester (6,6'-Mixture)

Cetirizine 6,6'-O-Lactose Ester (6,6'-Mixture)


  • Catalogue No.:PA 03 36620

  • CAS :

    NA

  • Molecular Formula : C66H90Cl2N4O26

  • Molecular Weight : 1426.34

PA 03 36630

Cetirizine Amide Dihydrochloride

Cetirizine Amide Dihydrochloride


  • Catalogue No.:PA 03 36630

  • CAS :

    200707-85-3

  • Molecular Formula : C21H28Cl3N3O2

  • Molecular Weight : 460.82

PA 03 36640

Cetirizine 3-Chloro Impurity Dihydrochloride

Cetirizine 3-Chloro Impurity Dihydrochloride


  • Catalogue No.:PA 03 36640

  • CAS :

    1232460-29-5

  • Molecular Formula : C21H27Cl3N2O3

  • Molecular Weight : 461.81

PA 03 36650

Cetirizine Glycerol Ester Impurity Hydrochloride

Cetirizine Glycerol Ester Impurity Hydrochloride


  • Catalogue No.:PA 03 36650

  • CAS :

    NA

  • Molecular Formula : C24H32Cl2N2O5

  • Molecular Weight : 499.43

PA 03 36660

(R)-Cetirizine Propanediol Ester

(R)-Cetirizine Propanediol Ester


  • Catalogue No.:PA 03 36660

  • CAS :

    NA

  • Molecular Formula : C24H31ClN2O4

  • Molecular Weight : 446.97

PA 03 36670

(S)-Cetirizine Propanediol Ester

(S)-Cetirizine Propanediol Ester


  • Catalogue No.:PA 03 36670

  • CAS :

    NA

  • Molecular Formula : C24H31ClN2O4

  • Molecular Weight : 446.97

PA 03 36680

Cetirizine Chiral Impurity

Cetirizine Chiral Impurity


  • Catalogue No.:PA 03 36680

  • CAS :

    163837-48-7

  • Molecular Formula : C21H27Cl3N2O3

  • Molecular Weight : 461.81

PA 03 36690

Cetirizine Glycol Ester

Cetirizine Glycol Ester


  • Catalogue No.:PA 03 36690

  • CAS :

    NA

  • Molecular Formula : C24H31ClN2O4

  • Molecular Weight : 446.97

PA 03 36700

(S)-Cetirizine Dihydrochloride

(S)-Cetirizine Dihydrochloride


  • Catalogue No.:PA 03 36700

  • CAS :

    163837-48-7

  • Molecular Formula : C21H27Cl3N2O3

  • Molecular Weight : 461.81

PA 03 36710

N,N-Bis(2-chloroethyl)benzenesulfonamide

N,N-Bis(2-chloroethyl)benzenesulfonamide


  • Catalogue No.:PA 03 36710

  • CAS :

    58023-19-1

  • Molecular Formula : C10H13Cl2NO2S

  • Molecular Weight : 282.19

PA 03 36720

Cetirizine Amide

Cetirizine Amide


  • Catalogue No.:PA 03 36720

  • CAS :

    83881-37-2

  • Molecular Formula : C21H26ClN3O2

  • Molecular Weight : 387.9

PA STI 015960

tert-Butyl Cetirizine-d8


  • Catalogue No.:PA STI 015960

  • CAS :

    1189466-71-4

  • Molecular Formula : C25H25D8ClN2O3

  • Molecular Weight : 453.04

PA STI 018740

Cetirizine-d8 Dihydrochloride


  • Catalogue No.:PA STI 018740

  • CAS :

    NA

  • Molecular Formula : C21H19D8Cl3N2O3

  • Molecular Weight : 469.86

PA STI 018750

(±)-Cetirizine-d4 Dihydrochloride

(±)-Cetirizine-d4 Dihydrochloride


  • Catalogue No.:PA STI 018750

  • CAS :

    1219803-84-5

  • Molecular Formula : C21H23D4Cl3N2O3

  • Molecular Weight : 465.83

PA STI 018751

Cetirizine-d4


  • Catalogue No.:PA STI 018751

  • CAS :

    NA

  • Molecular Formula : C21H21D4ClN2O3

  • Molecular Weight : 392.91

PA STI 018760

(R)-Cetirizine-d4 Dihydrochloride


  • Catalogue No.:PA STI 018760

  • CAS :

    1133210-23-7

  • Molecular Formula : C21H23D4Cl3N2O3

  • Molecular Weight : 465.83

PA STI 018761

(R)-Cetirizine-d4


  • Catalogue No.:PA STI 018761

  • CAS :

    1133210-23-7

  • Molecular Formula : C21H21D4ClN2O3

  • Molecular Weight : 392.91

PA STI 018770

rac Cetirizine-d8 N-Oxide


  • Catalogue No.:PA STI 018770

  • CAS :

    1216444-13-1

  • Molecular Formula : C21H17D8ClN2O4

  • Molecular Weight : 412.94

PA STI 018780

Cetirizine-d8 N-(2-Ethoxyacetate)


  • Catalogue No.:PA STI 018780

  • CAS :

    NA

  • Molecular Formula : C25H23D8ClN2O6

  • Molecular Weight : 499.03

PA STI 020500

2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethanol-d4


  • Catalogue No.:PA STI 020500

  • CAS :

    1794756-21-0

  • Molecular Formula : C19H19D4ClN2O

  • Molecular Weight : 334.88

PA STI 020570

1-[(4-Chlorophenyl)phenylmethyl]piperazine-d8


  • Catalogue No.:PA STI 020570

  • CAS :

    1189925-23-2

  • Molecular Formula : C17H11D8ClN2

  • Molecular Weight : 294.85

PA USP1102941

Cetirizine Related Compound B (2-(4-Benzhydrylpiperazin-1-yl)ethan-1-ol dihydrochloride) (1102941)


  • Catalogue No.:PA USP1102941

  • CAS :

    108983-83-1

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1102930

Cetirizine Related Compound A ((RS)-2-[2-[4-[(4-chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]ace (1102930)


  • Catalogue No.:PA USP1102930

  • CAS :

    246870-46-2

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1102952

Cetirizine Related Compound C (2-(2-{4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl}ethoxy)acetamid (1102952)


  • Catalogue No.:PA USP1102952

  • CAS :

    83881-37-2

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1102929

Cetirizine Hydrochloride (1102929)


  • Catalogue No.:PA USP1102929

  • CAS :

    83881-52-1

  • Molecular Formula :

  • Molecular Weight : NA

PA EPY0001197

Cetirizine for peak identification (Y0001197)


  • Catalogue No.:PA EPY0001197

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA BP837RB

cetirizine hydrochloride (837RB)


  • Catalogue No.:PA BP837RB

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA BP1081RB

cetirizine impurity standard (1081RB)


  • Catalogue No.:PA BP1081RB

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1102963

Cetirizine Related Compound G (2-{4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl}ethanol dihydrochl (1102963)


  • Catalogue No.:PA USP1102963

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA EPC0980650

Cetirizine dihydrochloride (C0980650)


  • Catalogue No.:PA EPC0980650

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA EPC0980651

Cetirizine impurity A (C0980651)


  • Catalogue No.:PA EPC0980651

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PAI 03 001510

(R)-2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol

(R)-2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol


  • Catalogue No.:PAI 03 001510

  • CAS :

    705289-61-8

  • Molecular Formula : C19H23ClN2O

  • Molecular Weight : 330.85

PAI 03 001520

(R)-2-(2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetic Acid

(R)-2-(2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetic Acid


  • Catalogue No.:PAI 03 001520

  • CAS :

    NA

  • Molecular Formula : C21H25ClN2O3

  • Molecular Weight : 388.89

PAI 03 001530

2-Hydroxypropyl 2-(2-(4-((R)-(4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate

2-Hydroxypropyl 2-(2-(4-((R)-(4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate


  • Catalogue No.:PAI 03 001530

  • CAS :

    NA

  • Molecular Formula : C24H31ClN2O4

  • Molecular Weight : 446.97

PAI 03 001540

1-Hydroxypropan-2-yl 2-(2-(4-((R)-(4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate

1-Hydroxypropan-2-yl 2-(2-(4-((R)-(4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate


  • Catalogue No.:PAI 03 001540

  • CAS :

    NA

  • Molecular Formula : C24H31ClN2O4

  • Molecular Weight : 446.20

PAI 03 001550

(2-Chlorophenyl)(phenyl)methanol

(2-Chlorophenyl)(phenyl)methanol


  • Catalogue No.:PAI 03 001550

  • CAS :

    NA

  • Molecular Formula : C13H11ClO

  • Molecular Weight : 218.68

PAI 03 001560

1-Chloro-2-(chloro(phenyl)methyl)benzene

1-Chloro-2-(chloro(phenyl)methyl)benzene


  • Catalogue No.:PAI 03 001560

  • CAS :

    NA

  • Molecular Formula : C13H10Cl2

  • Molecular Weight : 237.12

PAI 03 001570

2-(4-((2-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol

2-(4-((2-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol


  • Catalogue No.:PAI 03 001570

  • CAS :

    NA

  • Molecular Formula : C19H23ClN2O

  • Molecular Weight : 330.85

PAI 03 001580

2-(2-(4-((2-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetic Acid

2-(2-(4-((2-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetic Acid


  • Catalogue No.:PAI 03 001580

  • CAS :

    NA

  • Molecular Formula : C21H25ClN2O3

  • Molecular Weight : 388.89

PAI 03 001590

(R)-2-Oxopropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate

(R)-2-Oxopropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate


  • Catalogue No.:PAI 03 001590

  • CAS :

    NA

  • Molecular Formula : C24H29ClN2O4

  • Molecular Weight : 444.95

PAI 03 001600

2-(2-(4-Benzhydrylpiperazin-1-yl)ethoxy)acetamide

2-(2-(4-Benzhydrylpiperazin-1-yl)ethoxy)acetamide


  • Catalogue No.:PAI 03 001600

  • CAS :

    NA

  • Molecular Formula : C21H27N3O2

  • Molecular Weight : 353.46

PA 30 51550

1-((3-Chlorophenyl)(phenyl)methyl)piperazine

1-((3-Chlorophenyl)(phenyl)methyl)piperazine


  • Catalogue No.:PA 30 51550

  • CAS :

    70558-10-0

  • Molecular Formula : C17H19ClN2

  • Molecular Weight : 286.8

PA 30 51560

1-(4,4'-Dichlorobenzhydryl)piperazine

1-(4,4'-Dichlorobenzhydryl)piperazine


  • Catalogue No.:PA 30 51560

  • CAS :

    27469-61-0

  • Molecular Formula : C17H18Cl2N2

  • Molecular Weight : 321.25

PA IPIMP 01 15

Cetirizine impurity A (IMP/01/15)


  • Catalogue No.:PA IPIMP 01 15

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA 03 36730

Cetirizine Sorbitol Ester Hydrochloride

Cetirizine Sorbitol Ester Hydrochloride


  • Catalogue No.:PA 03 36730

  • CAS :

    NA

  • Molecular Formula : C27H38Cl2N2O8

  • Molecular Weight : 589.51

PA 03 36021

Cetirizine - Impurity B (Dihydrochloride Salt)

(RS)-2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]acetic acid Dihydrochloride


  • Catalogue No.:PA 03 36021

  • CAS :

    1000690-91-4

  • Molecular Formula : C19H23Cl3N2O2

  • Molecular Weight : 417.76

PA 03 36740

Propylene glycol ester of cetrizine diastereomer 2

Propylene glycol ester of cetrizine diastereomer 2


  • Catalogue No.:PA 03 36740

  • CAS :

    NA

  • Molecular Formula : C24H29ClN2O6

  • Molecular Weight : 476.95

PA 03 36750

N,N-Bis(2-chloroethyl)-p-toluenesulfonamide

N,N-Bis(2-chloroethyl)-p-toluenesulfonamide


  • Catalogue No.:PA 03 36750

  • CAS :

    42137-88-2

  • Molecular Formula : C11H15Cl2NO2S

  • Molecular Weight : 296.21

PA 30 0511000

(S)-1-(p-Chlorobenzhydryl)piperazine;

(S)-1-(p-Chlorobenzhydryl)piperazine;


  • Catalogue No.:PA 30 0511000

  • CAS :

    439858-21-6

  • Molecular Formula : C17H19ClN2

  • Molecular Weight : 286.8

PA 30 0511001

DL-Carnitine

DL-Carnitine


  • Catalogue No.:PA 30 0511001

  • CAS :

    406-76-8

  • Molecular Formula : C7H15NO3

  • Molecular Weight : 161.2

PA 30 0511002

Cetirizine Glycerol Ester

Cetirizine Glycerol Ester


  • Catalogue No.:PA 30 0511002

  • CAS :

    1243652-36-9

  • Molecular Formula : C24H31ClN2O5

  • Molecular Weight : 462.97

PA 30 0511003

2-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]propanoic acid ethyl ester

2-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]propanoic acid ethyl ester


  • Catalogue No.:PA 30 0511003

  • CAS :

    105198-38-7

  • Molecular Formula : C11H24O3Si

  • Molecular Weight : 232.4