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Pharmaceutical Reference Standards

Citalopram Hydrochloride

Picture of Citalopram Hydrochloride
CAT No: SZ-C039001
CAS No: 85118-27-0
Mol.F. : C20H21FN2O : HCl
Mol.Wt. : 324.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 59729-33-8 (free base) ; 59729-32-7 (HBr salt)
SZ-C039001
CAS No:85118-27-0
Mol.F.: C20H21FN2O : HCl
Mol.Wt.: 324.4 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 59729-33-8 (free base) ; 59729-32-7 (HBr salt)

Citalopram EP Impurity A

Picture of Citalopram EP Impurity A
CAT No: SZ-C039003
CAS No: 64372-56-1
Mol.F. : C20H23FN2O2
Mol.Wt. : 342.4
Inv. Status: In Stock
SZ-C039003
CAS No:64372-56-1
Mol.F.: C20H23FN2O2
Mol.Wt.: 342.4
Inv. Status: In Stock

Citalopram EP Impurity B

Picture of Citalopram EP Impurity B
CAT No: SZ-C039004
CAS No: 411221-53-9
Mol.F. : C20H21FN2O2
Mol.Wt. : 340.4
Inv. Status: In Stock
Rel. CAS No : 1332724-03-4 (oxalate salt)
SZ-C039004
CAS No:411221-53-9
Mol.F.: C20H21FN2O2 
Mol.Wt.: 340.4
Inv. Status: In Stock
Rel. CAS No : 1332724-03-4 (oxalate salt)

Citalopram EP Impurity C

Picture of Citalopram EP Impurity C
CAT No: SZ-C039005
CAS No: 372941-54-3
Mol.F. : C20H19FN2O2
Mol.Wt. : 338.4
Inv. Status: In Stock
Rel. CAS No : 1440961-11-4 (Oxalate salt) 
Rel. CAT No : SZ-E002004,
SZ-C039005
CAS No:372941-54-3
Mol.F.: C20H19FN2O2
Mol.Wt.: 338.4
Inv. Status: In Stock
Rel. CAS No : 1440961-11-4 (Oxalate salt) 

Citalopram EP Impurity D (HCl salt)

Picture of Citalopram EP Impurity D (HCl salt)
CAT No: SZ-C039006
CAS No: 97743-99-2
Mol.F. : C19H19FN2O : HCl
Mol.Wt. : 310.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 62498-67-3 (free base) ; 1188264-72-3 (HBr salt)
SZ-C039006
CAS No:97743-99-2
Mol.F.: C19H19FN2O : HCl
Mol.Wt.: 310.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 62498-67-3 (free base) ; 1188264-72-3 (HBr salt)

Citalopram EP Impurity E (HBr salt)

Picture of Citalopram EP Impurity E (HBr salt)
CAT No: SZ-C039007
CAS No: 1332724-08-9
Mol.F. : C19H21ClFNO : HBr
Mol.Wt. : 333.8 : 80.0
Inv. Status: Out of Stock, Under Synthesis
Rel. CAS No : 64169-45-5 (free base) ; 1329612-81-8 (oxalate salt)
SZ-C039007
CAS No:1332724-08-9
Mol.F.: C19H21ClFNO : HBr
Mol.Wt.: 333.8 : 80.0
Inv. Status: Out of Stock, Under Synthesis
Rel. CAS No : 64169-45-5 (free base) ; 1329612-81-8 (oxalate salt)

Citalopram EP Impurity F (Oxalate salt)

Picture of Citalopram EP Impurity F (Oxalate salt)
CAT No: SZ-C039008
CAS No: 64372-43-6
Mol.F. : C19H21BrFNO : C2H2O4
Mol.Wt. : 378.3 : 90.0
Inv. Status: In Stock
Rel. CAS No : 64169-39-7 (free base) ; 479065-02-6 (HBr salt)
SZ-C039008
CAS No:64372-43-6
Mol.F.: C19H21BrFNO : C2H2O4
Mol.Wt.: 378.3 : 90.0
Inv. Status: In Stock
Rel. CAS No : 64169-39-7 (free base) ; 479065-02-6 (HBr salt)

Citalopram EP Impurity G

Picture of Citalopram EP Impurity G
CAT No: SZ-C039009
CAS No: 1329745-98-3
Mol.F. : C25H33FN2O2
Mol.Wt. : 412.5
Inv. Status: In Stock
SZ-C039009
CAS No:1329745-98-3
Mol.F.: C25H33FN2O2
Mol.Wt.: 412.5
Inv. Status: In Stock

Citalopram USP Related Compound E

Picture of Citalopram USP Related Compound E
CAT No: SZ-C039010
CAS No: 63284-72-0
Mol.F. : C20H21FN2O2
Mol.Wt. : 340.4
Inv. Status: In Stock
Rel. CAS No : 62498-71-9 (HCl salt)
SZ-C039010
CAS No:63284-72-0
Mol.F.: C20H21FN2O2
Mol.Wt.: 340.4
Inv. Status: In Stock
Rel. CAS No : 62498-71-9 (HCl salt)

Citalopram USP Related Compound F

Picture of Citalopram USP Related Compound F
CAT No: SZ-C039011
CAS No: 55011-89-7
Mol.F. : C18H21N : HCl
Mol.Wt. : 251.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 29869-90-7 (free base)
SZ-C039011
CAS No:55011-89-7
Mol.F.: C18H21N : HCl
Mol.Wt.: 251.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 29869-90-7 (free base)

(R)-Citalopram Oxalate

Picture of (R)-Citalopram Oxalate
CAT No: SZ-C039012
CAS No: 219861-53-7
Mol.F. : C20H21FN2O : C2H2O4
Mol.Wt. : 324.4 . 90.0
Inv. Status: In Stock
Rel. CAS No : 128196-02-1 (free base)
SZ-C039012
CAS No:219861-53-7
Mol.F.: C20H21FN2O : C2H2O4
Mol.Wt.: 324.4 . 90.0
Inv. Status: In Stock
Rel. CAS No : 128196-02-1 (free base)

Citalopram S-Isomer

Picture of Citalopram S-Isomer
CAT No: SZ-C039013
CAS No: 219861-08-2
Mol.F. : C20H21FN2O : C2H2O4
Mol.Wt. : 324.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 128196-01-0 (free base)
SZ-C039013
CAS No:219861-08-2
Mol.F.: C20H21FN2O : C2H2O4
Mol.Wt.: 324.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 128196-01-0 (free base)

Citalopram Didesmethyl Metabolite

Picture of Citalopram Didesmethyl Metabolite
CAT No: SZ-C039014
CAS No: 1189694-81-2
Mol.F. : C18H17FN2O : HCl
Mol.Wt. : 296.3 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 62498-69-5 (free base)
SZ-C039014
CAS No:1189694-81-2
Mol.F.: C18H17FN2O : HCl
Mol.Wt.: 296.3 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 62498-69-5 (free base)

Citalopram Dihydroxy Impurity

Picture of Citalopram Dihydroxy Impurity
CAT No: SZ-C039015
CAS No: 103146-26-5
Mol.F. : C20H23FN2O2 : HBr
Mol.Wt. : 342.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 103146-25-4 (free base) ; 717133-25-0 (HCl salt)
SZ-C039015
CAS No:103146-26-5
Mol.F.: C20H23FN2O2 : HBr
Mol.Wt.: 342.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 103146-25-4 (free base) ; 717133-25-0 (HCl salt)

Citalopram HBr

Picture of Citalopram HBr
CAT No: SZ-C039016
CAS No: 59729-32-7
Mol.F. : C20H21FN2O : HBr
Mol.Wt. : 324.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 59729-33-8 (free base)
SZ-C039016
CAS No:59729-32-7
Mol.F.: C20H21FN2O : HBr
Mol.Wt.: 324.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 59729-33-8 (free base)

Citalopram USP Related Compound B Oxalate Salt

Picture of Citalopram USP Related Compound B Oxalate Salt
CAT No: SZ-C039017
CAS No: 1332724-03-4
Mol.F. : C20H21FN2O2 : C2H2O4
Mol.Wt. : 340.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 411221-53-9 (free base)
SZ-C039017
CAS No:1332724-03-4
Mol.F.: C20H21FN2O2 : C2H2O4
Mol.Wt.: 340.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 411221-53-9 (free base)

Citalopram USP Related Compound C Oxalate Salt

Picture of Citalopram USP Related Compound C Oxalate Salt
CAT No: SZ-C039018
CAS No: 1440961-11-4
Mol.F. : C20H19FN2O2 : C2H2O4
Mol.Wt. : 338.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 372941-54-3 (free base)
SZ-C039018
CAS No:1440961-11-4
Mol.F.: C20H19FN2O2 : C2H2O4
Mol.Wt.: 338.4 : 90.0
Inv. Status: In Stock
Rel. CAS No : 372941-54-3 (free base)

Citalopram EP Impurity D (HBr salt)

Picture of Citalopram EP Impurity D (HBr salt)
CAT No: SZ-C039019
CAS No: 1188264-72-3
Mol.F. : C19H19FN2O : HBr
Mol.Wt. : 310.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 62498-67-3 (free base) ; 97743-99-2 (HCl salt)
SZ-C039019
CAS No:1188264-72-3
Mol.F.: C19H19FN2O : HBr
Mol.Wt.: 310.4 : 80.9
Inv. Status: In Stock
Rel. CAS No : 62498-67-3 (free base) ; 97743-99-2 (HCl salt)

Citalopram USP Related Compound E HCl Salt

Picture of Citalopram USP Related Compound E HCl Salt
CAT No: SZ-C039020
CAS No: 62498-71-9
Mol.F. : C20H21FN2O2 : HCl
Mol.Wt. : 340.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 63284-72-0 (free base)
SZ-C039020
CAS No:62498-71-9
Mol.F.: C20H21FN2O2 : HCl
Mol.Wt.: 340.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 63284-72-0 (free base)

Citalopram Carboxylic Acid Impurity

Picture of Citalopram Carboxylic Acid Impurity
CAT No: SZ-C039021
CAS No: 440121-09-5
Mol.F. : C20H22FNO3
Mol.Wt. : 343.4
Inv. Status: In Stock
SZ-C039021
CAS No:440121-09-5
Mol.F.: C20H22FNO3
Mol.Wt.: 343.4
Inv. Status: In Stock

Citalopram Alkene Dimer

Picture of Citalopram Alkene Dimer
CAT No: SZ-C039022
CAS No: 1370643-27-8
Mol.F. : C40H41F2N4O : Cl
Mol.Wt. : 631.8 : 35.5
Inv. Status: Under Synthesis
Rel. CAS No : 1370687-55-0 (free base)
SZ-C039022
CAS No:1370643-27-8
Mol.F.: C40H41F2N4O : Cl
Mol.Wt.: 631.8 : 35.5
Inv. Status: Under Synthesis
Rel. CAS No : 1370687-55-0 (free base)

Citalopram EP Impurity F (HBr salt)

Picture of Citalopram EP Impurity F (HBr salt)
CAT No: SZ-C039023
CAS No: 479065-02-6
Mol.F. : C19H21BrFNO : HBr
Mol.Wt. : 378.3 : 80.9
Inv. Status: Custom Synthesis
Rel. CAS No : 64169-39-7 (free base) ; 64372-43-6 (oxalate salt)
SZ-C039023
CAS No:479065-02-6
Mol.F.: C19H21BrFNO : HBr
Mol.Wt.: 378.3 : 80.9
Inv. Status: Custom Synthesis
Rel. CAS No : 64169-39-7 (free base) ; 64372-43-6 (oxalate salt)

Desfluorocitalopram

Picture of Desfluorocitalopram
CAT No: SZ-C039024
CAS No: 1026009-77-7
Mol.F. : C20H22N2O
Mol.Wt. : 306.4
Inv. Status: In Stock
SZ-C039024
CAS No:1026009-77-7
Mol.F.: C20H22N2O
Mol.Wt.: 306.4
Inv. Status: In Stock

5-Aminophtalane

Picture of 5-Aminophtalane
CAT No: SZ-C039025
CAS No: 65399-05-5
Mol.F. : C8H7NO2
Mol.Wt. : 149.2
Inv. Status: In Stock
SZ-C039025
CAS No:65399-05-5
Mol.F.: C8H7NO2
Mol.Wt.: 149.2
Inv. Status: In Stock

4-Aminophthalimide

Picture of 4-Aminophthalimide
CAT No: SZ-C039026
CAS No: 3676-85-5
Mol.F. : C8H6N2O2
Mol.Wt. : 162.2
Inv. Status: In Stock
SZ-C039026
CAS No:3676-85-5
Mol.F.: C8H6N2O2
Mol.Wt.: 162.2
Inv. Status: In Stock

4-Nitrophthalimide

Picture of 4-Nitrophthalimide
CAT No: SZ-C039027
CAS No: 89-40-7
Mol.F. : C8H4N2O4
Mol.Wt. : 192.1
Inv. Status: In Stock
SZ-C039027
CAS No:89-40-7
Mol.F.: C8H4N2O4
Mol.Wt.: 192.1
Inv. Status: In Stock

5-Cyanophthalide

Picture of 5-Cyanophthalide
CAT No: SZ-C039028
CAS No: 82104-74-3
Mol.F. : C9H5NO2
Mol.Wt. : 159.1
Inv. Status: In Stock
SZ-C039028
CAS No:82104-74-3
Mol.F.: C9H5NO2
Mol.Wt.: 159.1
Inv. Status: In Stock

Citalopram Addition Product

Picture of Citalopram Addition Product
CAT No: SZ-C039029
CAS No: 717133-25-0
Mol.F. : C20H23FN2O2 : HCl
Mol.Wt. : 342.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 103146-25-4 (free base) ; 103146-26-5 (HBr salt)
SZ-C039029
CAS No:717133-25-0
Mol.F.: C20H23FN2O2 : HCl
Mol.Wt.: 342.4 : 36.5
Inv. Status: In Stock
Rel. CAS No : 103146-25-4 (free base) ; 103146-26-5 (HBr salt)

3-Dimethylaminoproplychloride Hydrochloride

Picture of 3-Dimethylaminoproplychloride Hydrochloride
CAT No: SZ-C039030
CAS No: 5407-04-5
Mol.F. : C5H12ClN : HCl
Mol.Wt. : 121.6 : 36.5
Inv. Status: In Stock
Rel. CAS No : 109-54-6 (free base)
SZ-C039030
CAS No:5407-04-5
Mol.F.: C5H12ClN : HCl
Mol.Wt.: 121.6 : 36.5
Inv. Status: In Stock
Rel. CAS No : 109-54-6 (free base)

1-Bromo-4-Fluorobenzene

Picture of 1-Bromo-4-Fluorobenzene
CAT No: SZ-C039031
CAS No: 460-00-4
Mol.F. : C6H4BrF
Mol.Wt. : 175
Inv. Status: In Stock
SZ-C039031
CAS No:460-00-4
Mol.F.: C6H4BrF
Mol.Wt.: 175
Inv. Status: In Stock

Fluorobenzene

Picture of Fluorobenzene
CAT No: SZ-C039032
CAS No: 462-06-6
Mol.F. : C6H5F
Mol.Wt. : 96.1
Inv. Status: In Stock
SZ-C039032
CAS No:462-06-6
Mol.F.: C6H5F
Mol.Wt.: 96.1
Inv. Status: In Stock

Ethyl p-Tosylate

Picture of Ethyl p-Tosylate
CAT No: SZ-C039033
CAS No: 80-40-0
Mol.F. : C9H12O3S
Mol.Wt. : 200.3
Inv. Status: In Stock
SZ-C039033
CAS No:80-40-0
Mol.F.: C9H12O3S
Mol.Wt.: 200.3
Inv. Status: In Stock

Citalopram Impurity 16

Picture of Citalopram Impurity 16
CAT No: SZ-C039034
CAS No: 1217846-84-8
Mol.F. : C26H25F2NO2
Mol.Wt. : 421.5
Inv. Status: Custom Synthesis
SZ-C039034
CAS No:1217846-84-8
Mol.F.: C26H25F2NO2
Mol.Wt.: 421.5
Inv. Status: Custom Synthesis

Citalopram Impurity 17

Picture of Citalopram Impurity 17
CAT No: SZ-C039035
CAS No: NA
Mol.F. : C26H25FN2O
Mol.Wt. : 400.5
Inv. Status: Custom Synthesis
SZ-C039035
CAS No:NA
Mol.F.: C26H25FN2O
Mol.Wt.: 400.5
Inv. Status: Custom Synthesis

Citalopram Diol-Desfluoro Impurity

Picture of Citalopram Diol-Desfluoro Impurity
CAT No: SZ-C039036
CAS No: 1187671-15-3
Mol.F. : C20H24N2O2
Mol.Wt. : 324.4
Inv. Status: Custom Synthesis
Rel. CAS No : 1187582-64-4 (HBr salt)
SZ-C039036
CAS No:1187671-15-3
Mol.F.: C20H24N2O2
Mol.Wt.: 324.4
Inv. Status: Custom Synthesis
Rel. CAS No : 1187582-64-4 (HBr salt)

Citalopram R-Isomer

Picture of Citalopram R-Isomer
CAT No: SZ-C039037
CAS No: 128196-02-1
Mol.F. : C20H21FN2O
Mol.Wt. : 324.4
Inv. Status: In Stock
Rel. CAS No : 219861-53-7 (oxalate salt)
SZ-C039037
CAS No:128196-02-1
Mol.F.: C20H21FN2O
Mol.Wt.: 324.4
Inv. Status: In Stock
Rel. CAS No : 219861-53-7 (oxalate salt)

Citalopram Impurity 18

Picture of Citalopram Impurity 18
CAT No: SZ-C039038
CAS No: 1370643-23-4
Mol.F. : C20H21FN2O
Mol.Wt. : 324.4
Inv. Status: In Stock
SZ-C039038
CAS No:1370643-23-4
Mol.F.: C20H21FN2O
Mol.Wt.: 324.4
Inv. Status: In Stock

Citalopram Descyano Impurity

Picture of Citalopram Descyano Impurity
CAT No: SZ-C039039
CAS No: 390817-87-5
Mol.F. : C19H22FNO
Mol.Wt. : 299.4
Inv. Status: Custom Synthesis
SZ-C039039
CAS No:390817-87-5
Mol.F.: C19H22FNO
Mol.Wt.: 299.4
Inv. Status: Custom Synthesis

(S)-Didemethyl Citalopram

Picture of (S)-Didemethyl Citalopram
CAT No: SZ-C039040
CAS No: 166037-78-1
Mol.F. : C18H17FN2O
Mol.Wt. : 296.3
Inv. Status: Custom Synthesis
SZ-C039040
CAS No:166037-78-1
Mol.F.: C18H17FN2O
Mol.Wt.: 296.3
Inv. Status: Custom Synthesis

Citalopram EP Impurity E (Oxalate salt)

Picture of Citalopram EP Impurity E (Oxalate salt)
CAT No: SZ-C039041
CAS No: 1329612-81-8
Mol.F. : C19H21ClFNO : C2H2O4
Mol.Wt. : 333.8 : 90.0
Inv. Status: In Stock
Rel. CAS No : 64169-45-5 (free base) ; 1332724-08-9 (HBr salt)
SZ-C039041
CAS No:1329612-81-8
Mol.F.: C19H21ClFNO : C2H2O4
Mol.Wt.: 333.8 : 90.0
Inv. Status: In Stock
Rel. CAS No : 64169-45-5 (free base) ; 1332724-08-9 (HBr salt)

Citalopram Impurity 20

Picture of Citalopram Impurity 20
CAT No: SZ-C039042
CAS No: NA
Mol.F. : C21H23ClFN2O : Cl
Mol.Wt. : 373.9 : 35.5
Inv. Status: In Stock
Rel. CAS No : 2847776-07-0 (free base) ; 2847776-08-1 (bromide)
SZ-C039042
CAS No:NA
Mol.F.: C21H23ClFN2O : Cl
Mol.Wt.: 373.9 : 35.5
Inv. Status: In Stock
Rel. CAS No : 2847776-07-0 (free base) ; 2847776-08-1 (bromide)

Stable Isotopes And Metabolites

Citalopram D3

Picture of Citalopram D3
CAT No: SZ-C039D01
CAS No: 1309283-28-0
Mol.F. : C18H17D3FNO
Mol.Wt. : 288.4
Inv. Status: Custom Synthesis
SZ-C039D01
CAS No:1309283-28-0
Mol.F.: C18H17D3FNO
Mol.Wt.: 288.4
Inv. Status: Custom Synthesis

Citalopram D4

Picture of Citalopram D4
CAT No: SZ-C039D02
CAS No: 1219908-84-5
Mol.F. : C20H17D4FN2O
Mol.Wt. : 328.4
Inv. Status: Custom Synthesis
Rel. CAS No : 1219803-58-3 (HBr salt)
SZ-C039D02
CAS No:1219908-84-5
Mol.F.: C20H17D4FN2O
Mol.Wt.: 328.4
Inv. Status: Custom Synthesis
Rel. CAS No : 1219803-58-3 (HBr salt)

Citalopram D6

Picture of Citalopram D6
CAT No: SZ-C039D03
CAS No: 1190003-26-9
Mol.F. : C20H15D6FN2O
Mol.Wt. : 330.4
Inv. Status: Custom Synthesis
Rel. CAS No : 2119948-08-0 (HBr salt)
SZ-C039D03
CAS No:1190003-26-9
Mol.F.: C20H15D6FN2O
Mol.Wt.: 330.4
Inv. Status: Custom Synthesis
Rel. CAS No : 2119948-08-0 (HBr salt)