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Pharmaceutical Reference Standards

Cetirizine Dihydrochloride

Picture of Cetirizine Dihydrochloride
CAT No: SZ-C032001
CAS No: 83881-52-1
Mol.F. : C21H25ClN2O3 : 2(HCl)
Mol.Wt. : 388.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 83881-51-0 (free base) ; 798544-25-9 (HCl salt) ; 83881-50-9 (K salt)
SZ-C032001
CAS No:83881-52-1
Mol.F.: C21H25ClN2O3 : 2(HCl)
Mol.Wt.: 388.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 83881-51-0 (free base) ; 798544-25-9 (HCl salt) ; 83881-50-9 (K salt)

Cetirizine EP Impurity A 

Picture of Cetirizine EP Impurity A 
CAT No: SZ-C032002
CAS No: 303-26-4
Mol.F. : C17H19ClN2
Mol.Wt. : 286.8
Inv. Status: In Stock
SZ-C032002
CAS No:303-26-4
Mol.F.: C17H19ClN2
Mol.Wt.: 286.8
Inv. Status: In Stock

Cetirizine EP Impurity B

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CAT No: SZ-C032003
CAS No: 113740-61-7
Mol.F. : C19H21ClN2O2
Mol.Wt. : 344.8
Inv. Status: In Stock
Rel. CAT No : SZ-L045009,
SZ-C032003
CAS No:113740-61-7
Mol.F.: C19H21ClN2O2
Mol.Wt.: 344.8
Inv. Status: In Stock

Cetirizine EP Impurity C

Picture of Cetirizine EP Impurity C
CAT No: SZ-C032004
CAS No: 83881-59-8
Mol.F. : C21H25ClN2O3
Mol.Wt. : 388.9
Inv. Status: In Stock
Rel. CAT No : SZ-L045010,
SZ-C032004
CAS No:83881-59-8
Mol.F.: C21H25ClN2O3
Mol.Wt.: 388.9
Inv. Status: In Stock

Cetirizine EP Impurity D

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CAT No: SZ-C032005
CAS No: 346451-15-8
Mol.F. : C30H28Cl2N2
Mol.Wt. : 487.5
Inv. Status: In Stock
Rel. CAS No : 856841-95-7 (2HCl salt)
SZ-C032005
CAS No:346451-15-8
Mol.F.: C30H28Cl2N2
Mol.Wt.: 487.5
Inv. Status: In Stock
Rel. CAS No : 856841-95-7 (2HCl salt)

Cetirizine EP Impurity E 

Picture of Cetirizine EP Impurity E 
CAT No: SZ-C032006
CAS No: 682323-77-9
Mol.F. : C23H29ClN2O4
Mol.Wt. : 432.9
Inv. Status: In Stock
SZ-C032006
CAS No:682323-77-9
Mol.F.: C23H29ClN2O4
Mol.Wt.: 432.9
Inv. Status: In Stock

Cetirizine EP Impurity F

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CAT No: SZ-C032007
CAS No: 83881-53-2
Mol.F. : C21H26N2O3
Mol.Wt. : 354.5
Inv. Status: In Stock
SZ-C032007
CAS No:83881-53-2
Mol.F.: C21H26N2O3
Mol.Wt.: 354.5
Inv. Status: In Stock

Cetirizine EP Impurity G

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CAT No: SZ-C032008
CAS No: 164726-80-1
Mol.F. : C19H23ClN2O . 2HCl
Mol.Wt. : 330.86 . 2(36.5)
Inv. Status: In Stock
SZ-C032008
CAS No:164726-80-1
Mol.F.: C19H23ClN2O . 2HCl
Mol.Wt.: 330.86 . 2(36.5)
Inv. Status: In Stock

Cetirizine Methyl Ester (USP)

Picture of Cetirizine Methyl Ester (USP)
CAT No: SZ-C032009
CAS No: 83881-48-5
Mol.F. : C22H27ClN2O3 : 2(HCl)
Mol.Wt. : 402.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 83881-46-3 (free base)
SZ-C032009
CAS No:83881-48-5
Mol.F.: C22H27ClN2O3 : 2(HCl)
Mol.Wt.: 402.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 83881-46-3 (free base)

Cetirizine EP Impurity B Ethyl Ester

Picture of Cetirizine EP Impurity B Ethyl Ester
CAT No: SZ-C032010
CAS No: 19178-83-7
Mol.F. : C21H25ClN2O2
Mol.Wt. : 372.9
Inv. Status: Custom Synthesis
SZ-C032010
CAS No:19178-83-7
Mol.F.: C21H25ClN2O2
Mol.Wt.: 372.9
Inv. Status: Custom Synthesis

Cetirizine USP Related Compund A (2HCl salt)

Picture of Cetirizine USP Related Compund A (2HCl salt)
CAT No: SZ-C032011
CAS No: 2732277-01-7
Mol.F. : C23H29ClN2O3 : 2(HCl)
Mol.Wt. : 416.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 246870-46-2 (free base)
SZ-C032011
CAS No:2732277-01-7
Mol.F.: C23H29ClN2O3 : 2(HCl)
Mol.Wt.: 416.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 246870-46-2 (free base)

Cetirizine USP Related Compund B

Picture of Cetirizine USP Related Compund B
CAT No: SZ-C032012
CAS No: 108983-83-1
Mol.F. : C19H24N2O : 2(HCl)
Mol.Wt. : 296.4 : 2(36.5)
Inv. Status: Custom Synthesis
Rel. CAS No : 10527-64-7 (free base)
SZ-C032012
CAS No:108983-83-1
Mol.F.: C19H24N2O : 2(HCl)
Mol.Wt.: 296.4 : 2(36.5)
Inv. Status: Custom Synthesis
Rel. CAS No : 10527-64-7 (free base)

Cetirizine USP Related Compound C

Picture of Cetirizine USP Related Compound C
CAT No: SZ-C032013
CAS No: 83881-37-2
Mol.F. : C21H26ClN3O2
Mol.Wt. : 387.9
Inv. Status: In Stock
SZ-C032013
CAS No:83881-37-2
Mol.F.: C21H26ClN3O2
Mol.Wt.: 387.9
Inv. Status: In Stock

Cetirizine 3-Chloro Impurity 

Picture of Cetirizine 3-Chloro Impurity 
CAT No: SZ-C032016
CAS No: 1232460-29-5
Mol.F. : C21H25ClN2O3 : 2(HCl)
Mol.Wt. : 388.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 1232460-31-9 (free base)
SZ-C032016
CAS No:1232460-29-5
Mol.F.: C21H25ClN2O3 : 2(HCl)
Mol.Wt.: 388.9 : 2(36.5)
Inv. Status: In Stock
Rel. CAS No : 1232460-31-9 (free base)

Cetirizine R-Isomer dihydrochloride

Picture of Cetirizine R-Isomer dihydrochloride
CAT No: SZ-C032017
CAS No: 130018-87-0
Mol.F. : C21H25ClN2O3 : 2(HCl)
Mol.Wt. : 388.9 : 2(36.5)
Inv. Status: Out of Stock
Rel. CAS No : 130018-77-8 (free base)
SZ-C032017
CAS No:130018-87-0
Mol.F.: C21H25ClN2O3 : 2(HCl)
Mol.Wt.: 388.9 : 2(36.5)
Inv. Status: Out of Stock
Rel. CAS No : 130018-77-8 (free base)

Cetirizine S-Isomer

Picture of Cetirizine S-Isomer
CAT No: SZ-C032018
CAS No: 130018-89-2
Mol.F. : C21H25ClN2O3 : HCl
Mol.Wt. : 388.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 130018-76-7 (free base) ; 163837-48-7 (2HCl salt)
SZ-C032018
CAS No:130018-89-2
Mol.F.: C21H25ClN2O3 : HCl
Mol.Wt.: 388.9 : 36.5
Inv. Status: In Stock
Rel. CAS No : 130018-76-7 (free base) ; 163837-48-7 (2HCl salt)

Cetirizine N-Oxide

Picture of Cetirizine N-Oxide
CAT No: SZ-C032019
CAS No: 1076199-80-8
Mol.F. : C21H25ClN2O4
Mol.Wt. : 404.9
Inv. Status: In Stock
SZ-C032019
CAS No:1076199-80-8
Mol.F.: C21H25ClN2O4
Mol.Wt.: 404.9
Inv. Status: In Stock

Cetirizine Sorbitol Ester Impurity

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CAT No: SZ-C032020
CAS No: 1384888-64-5
Mol.F. : C27H37ClN2O8
Mol.Wt. : 553
Inv. Status: In Stock
SZ-C032020
CAS No:1384888-64-5
Mol.F.: C27H37ClN2O8
Mol.Wt.: 553
Inv. Status: In Stock

Cetirizine Lactose Ester

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CAT No: SZ-C032021
CAS No: NA
Mol.F. : C33H45ClN2O13
Mol.Wt. : 713.2
Inv. Status: Out of Stock, Custom Synthesis
SZ-C032021
CAS No:NA
Mol.F.: C33H45ClN2O13
Mol.Wt.: 713.2
Inv. Status: Out of Stock, Custom Synthesis

Cetirizine Impurity 2

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CAT No: SZ-C032023
CAS No: 1391052-52-0
Mol.F. : C23H23ClN2O2S
Mol.Wt. : 427
Inv. Status: In Stock
SZ-C032023
CAS No:1391052-52-0
Mol.F.: C23H23ClN2O2S
Mol.Wt.: 427
Inv. Status: In Stock

Cetirizine Glycerol Ester 

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CAT No: SZ-C032024
CAS No: 1243652-36-9
Mol.F. : C24H31ClN2O5
Mol.Wt. : 463
Inv. Status: In Stock
SZ-C032024
CAS No:1243652-36-9
Mol.F.: C24H31ClN2O5
Mol.Wt.: 463
Inv. Status: In Stock

Cetirizine Impurity 3

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CAT No: SZ-C032028
CAS No: 134978-97-5
Mol.F. : C6H13NO4
Mol.Wt. : 163.2
Inv. Status: In Stock
Rel. CAS No : 134979-01-4 (HCl salt) ; 170304-78-6 (TFA salt)
SZ-C032028
CAS No:134978-97-5
Mol.F.: C6H13NO4
Mol.Wt.: 163.2
Inv. Status: In Stock
Rel. CAS No : 134979-01-4 (HCl salt) ; 170304-78-6 (TFA salt)

Cetirizine Propanediol Ester Impurity

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CAT No: SZ-C032029
CAS No: NA
Mol.F. : C24H31ClN2O4
Mol.Wt. : 447
Inv. Status: Custom Synthesis
SZ-C032029
CAS No:NA
Mol.F.: C24H31ClN2O4
Mol.Wt.: 447
Inv. Status: Custom Synthesis

Cetrizine Impurity E

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CAT No: SZ-C032030
CAS No: 2724877-99-8
Mol.F. : C38H42Cl2N4O2
Mol.Wt. : 657.7
Inv. Status: Custom Synthesis
SZ-C032030
CAS No:2724877-99-8
Mol.F.: C38H42Cl2N4O2
Mol.Wt.: 657.7
Inv. Status: Custom Synthesis

Cetirizine Impurity 5

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CAT No: SZ-C032031
CAS No: NA
Mol.F. : C21H24Cl2N2O3
Mol.Wt. : 423.3
Inv. Status: Custom Synthesis
SZ-C032031
CAS No:NA
Mol.F.: C21H24Cl2N2O3
Mol.Wt.: 423.3
Inv. Status: Custom Synthesis

Cetirizine Impurity 6

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CAT No: SZ-C032032
CAS No: NA
Mol.F. : C19H20Cl2N2O2
Mol.Wt. : 379.3
Inv. Status: Custom Synthesis
SZ-C032032
CAS No:NA
Mol.F.: C19H20Cl2N2O2
Mol.Wt.: 379.3
Inv. Status: Custom Synthesis

Cetirizine Impurity 7

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CAT No: SZ-C032033
CAS No: 82-93-9
Mol.F. : C18H21ClN2
Mol.Wt. : 300.8
Inv. Status: Custom Synthesis
Rel. CAS No : 1620-21-9 (HCl salt)
SZ-C032033
CAS No:82-93-9
Mol.F.: C18H21ClN2
Mol.Wt.: 300.8
Inv. Status: Custom Synthesis
Rel. CAS No : 1620-21-9 (HCl salt)

Cetirizine Impurity 8

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CAT No: SZ-C032034
CAS No: NA
Mol.F. : C21H25ClN2O
Mol.Wt. : 356.9
Inv. Status: Custom Synthesis
SZ-C032034
CAS No:NA
Mol.F.: C21H25ClN2O
Mol.Wt.: 356.9
Inv. Status: Custom Synthesis

Cetirizine Hydrochloride

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CAT No: SZ-C032035
CAS No: 798544-25-9
Mol.F. : C21H25ClN2O3 : HCl
Mol.Wt. : 388.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 83881-51-0 (free base) ; 83881-52-1 (2HCl salt) ; 83881-50-9 (K salt)
SZ-C032035
CAS No:798544-25-9
Mol.F.: C21H25ClN2O3 : HCl
Mol.Wt.: 388.9 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 83881-51-0 (free base) ; 83881-52-1 (2HCl salt) ; 83881-50-9 (K salt)

Cetirizine Impurity 9

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CAT No: SZ-C032036
CAS No: NA
Mol.F. : C25H32ClNO4 : 2(HCl)
Mol.Wt. : 446 : 2(36.5)
Inv. Status: Custom Synthesis
SZ-C032036
CAS No:NA
Mol.F.: C25H32ClNO4 : 2(HCl)
Mol.Wt.: 446 : 2(36.5)
Inv. Status: Custom Synthesis

Cetirizine Glycol Impurity

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CAT No: SZ-C032037
CAS No: 324047-29-2
Mol.F. : C23H29ClN2O4
Mol.Wt. : 432.9
Inv. Status: Custom Synthesis
SZ-C032037
CAS No:324047-29-2
Mol.F.: C23H29ClN2O4
Mol.Wt.: 432.9
Inv. Status: Custom Synthesis

Cetirizine Impurity 10

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CAT No: SZ-C032038
CAS No: 886886-04-0
Mol.F. : C6H10N4
Mol.Wt. : 138.2
Inv. Status: Custom Synthesis
SZ-C032038
CAS No:886886-04-0
Mol.F.: C6H10N4
Mol.Wt.: 138.2
Inv. Status: Custom Synthesis

Cetirizine Bromo Impurity

Picture of Cetirizine Bromo Impurity
CAT No: SZ-C032039
CAS No: NA
Mol.F. : C21H25BrN2O3
Mol.Wt. : 433.3
Inv. Status: In Stock
SZ-C032039
CAS No:NA
Mol.F.: C21H25BrN2O3
Mol.Wt.: 433.3
Inv. Status: In Stock

Cetrizine Impurity 14

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CAT No: SZ-C032043
CAS No: NA
Mol.F. : C24H29ClN2O6
Mol.Wt. : 477.0
Inv. Status: Custom Synthesis
SZ-C032043
CAS No:NA
Mol.F.: C24H29ClN2O6
Mol.Wt.: 477.0
Inv. Status: Custom Synthesis

Cetrizine Impurity 15

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CAT No: SZ-C032044
CAS No: 109036-15-9
Mol.F. : C17H19ClN2
Mol.Wt. : 286.8
Inv. Status: Custom Synthesis
SZ-C032044
CAS No:109036-15-9
Mol.F.: C17H19ClN2
Mol.Wt.: 286.8
Inv. Status: Custom Synthesis

Cetrizine Impurity 16

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CAT No: SZ-C032045
CAS No: 70558-10-0
Mol.F. : C17H19ClN2
Mol.Wt. : 286.8
Inv. Status: Custom Synthesis
SZ-C032045
CAS No:70558-10-0
Mol.F.: C17H19ClN2
Mol.Wt.: 286.8
Inv. Status: Custom Synthesis

Cetirizine

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CAT No: SZ-C032046
CAS No: 83881-51-0
Mol.F. : C21H25ClN2O3
Mol.Wt. : 388.9
Inv. Status: In Stock
Rel. CAS No : 83881-52-1 (2HCl salt) ; 798544-25-9 (HCl salt)
SZ-C032046
CAS No:83881-51-0
Mol.F.: C21H25ClN2O3
Mol.Wt.: 388.9
Inv. Status: In Stock
Rel. CAS No : 83881-52-1 (2HCl salt) ; 798544-25-9 (HCl salt)

Cetrizine Impurity 17

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CAT No: SZ-C032047
CAS No: NA
Mol.F. : C26H20Cl2O3
Mol.Wt. : 451.3
Inv. Status: Custom Synthesis
SZ-C032047
CAS No:NA
Mol.F.: C26H20Cl2O3
Mol.Wt.: 451.3
Inv. Status: Custom Synthesis

Cetrizine Impurity 18

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CAT No: SZ-C032048
CAS No: 28022-43-7
Mol.F. : C13H12ClN
Mol.Wt. : 217.7
Inv. Status: Custom Synthesis
SZ-C032048
CAS No:28022-43-7
Mol.F.: C13H12ClN
Mol.Wt.: 217.7
Inv. Status: Custom Synthesis

Dichloro Cetrizine

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CAT No: SZ-C032049
CAS No: NA
Mol.F. : C21H24Cl2N2O3
Mol.Wt. : 423.3
Inv. Status: In Stock
SZ-C032049
CAS No:NA
Mol.F.: C21H24Cl2N2O3
Mol.Wt.: 423.3
Inv. Status: In Stock

Cetrizine Impurity 19

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CAT No: SZ-C032050
CAS No: NA
Mol.F. : C23H30Cl2N2O2
Mol.Wt. : 437.4
Inv. Status: Custom Synthesis
SZ-C032050
CAS No:NA
Mol.F.: C23H30Cl2N2O2
Mol.Wt.: 437.4
Inv. Status: Custom Synthesis

Cetirizine USP Related Compund A

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CAT No: SZ-C032051
CAS No: 246870-46-2
Mol.F. : C23H29ClN2O3
Mol.Wt. : 416.9
Inv. Status: In Stock
Rel. CAS No : 2732277-01-7 (2HCl salt)
SZ-C032051
CAS No:246870-46-2
Mol.F.: C23H29ClN2O3
Mol.Wt.: 416.9
Inv. Status: In Stock
Rel. CAS No : 2732277-01-7 (2HCl salt)

Cetrizine Impurity 20

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CAT No: SZ-C032052
CAS No: 439858-21-6
Mol.F. : C17H19ClN2
Mol.Wt. : 286.8
Inv. Status: Custom Synthesis
SZ-C032052
CAS No:439858-21-6
Mol.F.: C17H19ClN2
Mol.Wt.: 286.8
Inv. Status: Custom Synthesis

Cetrizine Impurity 21

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CAT No: SZ-C032053
CAS No: 163837-32-9
Mol.F. : C13H12ClN
Mol.Wt. : 217.7
Inv. Status: Custom Synthesis
SZ-C032053
CAS No:163837-32-9
Mol.F.: C13H12ClN
Mol.Wt.: 217.7
Inv. Status: Custom Synthesis

Cetrizine Impurity 22

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CAT No: SZ-C032054
CAS No: 197969-01-0
Mol.F. : C8H16N2O3
Mol.Wt. : 188.2
Inv. Status: Custom Synthesis
Rel. CAS No : 197968-63-1 (HCl salt)
SZ-C032054
CAS No:197969-01-0
Mol.F.: C8H16N2O3
Mol.Wt.: 188.2
Inv. Status: Custom Synthesis
Rel. CAS No : 197968-63-1 (HCl salt)

Cetrizine-D-Mannitol Ester

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CAT No: SZ-C032055
CAS No: NA
Mol.F. : C27H37ClN2O8
Mol.Wt. : 553.0
Inv. Status: Custom Synthesis
SZ-C032055
CAS No:NA
Mol.F.: C27H37ClN2O8
Mol.Wt.: 553.0
Inv. Status: Custom Synthesis

Stable Isotopes And Metabolites

Cetirizine D4

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CAT No: SZ-C032D01
CAS No: 1219803-84-5
Mol.F. : C21H21D4ClN2O3
Mol.Wt. : 392.9
Inv. Status: Custom Synthesis
SZ-C032D01
CAS No:1219803-84-5
Mol.F.: C21H21D4ClN2O3
Mol.Wt.: 392.9
Inv. Status: Custom Synthesis

Cetirizine D8

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CAT No: SZ-C032D02
CAS No: 774596-22-4
Mol.F. : C21H17D8ClN2O3
Mol.Wt. : 396.9
Inv. Status: Custom Synthesis
SZ-C032D02
CAS No:774596-22-4
Mol.F.: C21H17D8ClN2O3
Mol.Wt.: 396.9
Inv. Status: Custom Synthesis

1-[(4-Chlorophenyl)phenylmethyl]piperazine D8

Picture of 1-[(4-Chlorophenyl)phenylmethyl]piperazine D8
CAT No: SZ-C032D03
CAS No: 1189925-23-2
Mol.F. : C17H11D8ClN2
Mol.Wt. : 294.9
Inv. Status: Custom Synthesis
SZ-C032D03
CAS No:1189925-23-2
Mol.F.: C17H11D8ClN2
Mol.Wt.: 294.9
Inv. Status: Custom Synthesis