• A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
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  • M
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  • Y
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Tofacitinib Impurity A

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Chemical Name: (3R,4S)-4-Methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-1-piperidinepropanenitrile
CAT No: VS-T066002
CAS No: 1092578-46-5
Mol.F. C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis


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Tofacitinib

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CAT No: VS-T066000
CAS No: 477600-75-2
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Citrate

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CAT No: VS-T066001
CAS No: 540737-29-9
Mol.F.: C16H20N6O : C6H8O7 
Mol.Wt.:  312.4 : 192.1
Status: Custom Synthesis

Tofacitinib Impurity A

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CAT No: VS-T066002
CAS No: 1092578-46-5
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Impurity B

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CAT No: VS-T066003
CAS No: 1092578-48-7
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Impurity C Citrate

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CAT No: VS-T066004
CAS No: 2174011-55-1
Mol.F.: C16H20N6O. C6H8O7 
Mol.Wt.:  312.4 : 192.1
Status: Custom Synthesis

Tofacitinib Impurity F

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CAT No: VS-T066005
CAS No: 384338-23-2
Mol.F.: C14H22N2
Mol.Wt.: 218.3
Status: Custom Synthesis

Tofacitinib Impurity I

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CAT No: VS-T066006
CAS No: N/A
Mol.F.: C14H22N2 : 2(HCl)
Mol.Wt.: 218.3 : 2(36.5)
Status: Custom Synthesis

Tofacitinib Impurity J

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CAT No: VS-T066007
CAS No: N/A
Mol.F.: C14H22N2 : 2(HCl)
Mol.Wt.: 218.3 : 2(36.5)
Status: Custom Synthesis

Tofacitinib Acid Impurity

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CAT No: VS-T066008
CAS No: 2328165-36-0
Mol.F.: C16H21N5O3
Mol.Wt.: 331.4
Status: Custom Synthesis

Tofacitinib Amide Impurity

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CAT No: VS-T066009
CAS No: 1675248-19-7
Mol.F.: C16H22N6O2
Mol.Wt.: 330.4
Status: Custom Synthesis

Tofacitinib Impurity M

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CAT No: VS-T066010
CAS No: 477600-74-1
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Impurity N

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CAT No: VS-T066011
CAS No: 1260614-73-0
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Benzyl Impurity

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CAT No: VS-T066012
CAS No: 477600-73-0
Mol.F.: C20H25N5
Mol.Wt.: 335.5
Status: Custom Synthesis

Tofacitinib Impurity P

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CAT No: VS-T066013
CAS No: 1252883-90-1
Mol.F.: C20H25N5
Mol.Wt.: 335.5
Status: Custom Synthesis

Tofacitinib Impurity Q

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CAT No: VS-T066014
CAS No: 3680-69-1
Mol.F.: C6H4ClN3
Mol.Wt.: 153.6
Status: Custom Synthesis

Tofacitinib Impurity R

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CAT No: VS-T066015
CAS No: 479633-63-1
Mol.F.: C13H10ClN3O2S
Mol.Wt.: 307.8
Status: Custom Synthesis

Tofacitinib Impurity S

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CAT No: VS-T066016
CAS No: 923036-30-0
Mol.F.: C27H31N5O2S
Mol.Wt.: 489.6
Status: Custom Synthesis

Tofacitinib Impurity T

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CAT No: VS-T066017
CAS No: 2504210-31-3
Mol.F.: C16H18N6O
Mol.Wt.: 310.4
Status: Custom Synthesis

Tofacitinib Impurity U

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CAT No: VS-T066018
CAS No: 1616760-97-4
Mol.F.: C13H18ClN5
Mol.Wt.: 297.8
Status: Custom Synthesis

Tofacitinib Impurity V

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CAT No: VS-T066019
CAS No: 1616761-00-2
Mol.F.: C16H19ClN6O
Mol.Wt.: 346.8
Status: Custom Synthesis

Tofacitinib Impurity W

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CAT No: VS-T066020
CAS No: 2504210-32-4
Mol.F.: C13H18ClN5
Mol.Wt.: 279.8
Status: Custom Synthesis

Tofacitinib Impurity X

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CAT No: VS-T066021
CAS No: 2097982-05-1
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Impurity Y

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CAT No: VS-T066022
CAS No: 2227197-38-6
Mol.F.: C14H21N5
Mol.Wt.: 259.4
Status: Custom Synthesis

Tofacitinib Impurity Z

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CAT No: VS-T066023
CAS No: 477600-76-3
Mol.F.: C15H21N5O
Mol.Wt.: 287.4
Status: Custom Synthesis

Tofacitinib Related Compound 1

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CAT No: VS-T066024
CAS No: 2504210-30-2
Mol.F.: C16H22N6O2
Mol.Wt.: 330.4
Status: Custom Synthesis

Tofacitinib Related Compound 2 HCl

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CAT No: VS-T066025
CAS No: 1640971-87-4
Mol.F.: C10H17N3O : HCl
Mol.Wt.: 195.3 : 36.5
Status: Custom Synthesis

Tofacitinib Related Compound 3

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CAT No: VS-T066026
CAS No: N/A
Mol.F.: C13H18N4O2
Mol.Wt.: 262.3
Status: Custom Synthesis

Tofacitinib Related Compound 4

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CAT No: VS-T066027
CAS No: 1092578-43-2
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Related Compound 6

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CAT No: VS-T066028
CAS No: 2459302-77-1
Mol.F.: C19H21N7O2
Mol.Wt.: 379.4
Status: Custom Synthesis

Tofacitinib Related Compound 8

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CAT No: VS-T066029
CAS No: 2504210-41-5
Mol.F.: C29H38N10O2
Mol.Wt.: 558.7
Status: Custom Synthesis

Tofacitinib Related Compound 9

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CAT No: VS-T066030
CAS No: 2459302-78-2
Mol.F.: C34H45N7
Mol.Wt.: 551.8
Status: Custom Synthesis

Tofacitinib Related Compound 10

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CAT No: VS-T066031
CAS No: 2374700-39-5
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Related Compound 11

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CAT No: VS-T066032
CAS No: 1640971-60-3
Mol.F.: C14H20N6O
Mol.Wt.: 288.4
Status: Custom Synthesis

Tofacitinib Related Compound 12

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CAT No: VS-T066033
CAS No: 2459302-80-6
Mol.F.: C20H25N5
Mol.Wt.: 335.5
Status: Custom Synthesis

Tofacitinib Related Compound 13

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CAT No: VS-T066034
CAS No: 1092578-45-4
Mol.F.: C20H25N5
Mol.Wt.: 335.5
Status: Custom Synthesis

Tofacitinib Related Compound 14

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CAT No: VS-T066035
CAS No: 2227199-28-0
Mol.F.: C14H19N5O
Mol.Wt.: 273.3
Status: Custom Synthesis

Tofacitinib Related Compound 15

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CAT No: VS-T066036
CAS No: N/A
Mol.F.: C15H21N5O
Mol.Wt.: 287.4
Status: Custom Synthesis

Tofacitinib Related Compound 16

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CAT No: VS-T066037
CAS No: N/A
Mol.F.: C15H23N5
Mol.Wt.: 273.4
Status: Custom Synthesis

Tofacitinib Related Compound 17

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CAT No: VS-T066038
CAS No: 2056104-91-5
Mol.F.: C27H31N5O2S
Mol.Wt.: 489.6
Status: Custom Synthesis

Tofacitinib Related Compound 18

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CAT No: VS-T066039
CAS No: 1092578-44-3
Mol.F.: C27H31N5O2S
Mol.Wt.: 489.6
Status: Custom Synthesis

Tofacitinib N-Oxide

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CAT No: VS-T066040
CAS No: 2028267-73-2
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Related Compound 20

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CAT No: VS-T066041
CAS No: 2259288-22-5
Mol.F.: C23H26N6O3S
Mol.Wt.: 466.6
Status: Custom Synthesis

Tofacitinib Related Compound 21 

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CAT No: VS-T066042
CAS No: 1809002-40-1
Mol.F.: C16H22N6O : C6H8O7
Mol.Wt.: 314.4 : 192.1
Status: Custom Synthesis

Tofacitinib Related Compound 23 DiHCl

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CAT No: VS-T066043
CAS No: N/A
Mol.F.: C13H21N5.2 HCl
Mol.Wt.: 247.4 : 2(36.5)
Status: Custom Synthesis

Tofacitinib Related Compound 24

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CAT No: VS-T066044
CAS No: 2459302-82-8
Mol.F.: C19H23N7O2
Mol.Wt.: 381.4
Status: Custom Synthesis

Tofacitinib Related Compound 25

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CAT No: VS-T066045
CAS No: 2504210-33-5
Mol.F.: C27H31N5OS
Mol.Wt.: 473.7
Status: Custom Synthesis

Tofacitinib Related Compound 26 HCl

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CAT No: VS-T066046
CAS No: 1206824-85-2
Mol.F.: C10H17N3O : HCl
Mol.Wt.: 195.3 : 36.5
Status: Custom Synthesis

Tofacitinib Related Compound 27

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CAT No: VS-T066047
CAS No: N/A
Mol.F.: C13H18N4O2
Mol.Wt.: 262.3
Status: Custom Synthesis

Tofacitinib Related Compound 28 (rac-trans-Tofacitinib)

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CAT No: VS-T066048
CAS No: N/A
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Related Compound 29

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CAT No: VS-T066049
CAS No: 134965-85-8
Mol.F.: C12H7ClN6
Mol.Wt.: 270.7
Status: Custom Synthesis

Tofacitinib Related Impurity (PF-05579970)

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CAT No: VS-T066050
CAS No: N/A
Mol.F.: C15H21N5O
Mol.Wt.: 287.4
Status: Custom Synthesis

rac-Tofacitinib (Mixture of Diastereomers)

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CAT No: VS-T066051
CAS No: 344418-92-4
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Impurity (N-Des-(2-Cyanide-acetyl)-(3S,4R))

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CAT No: VS-T066052
CAS No: 2378663-15-9
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Impurity (N-Des-(2-Cyanide-acetyl)-(3R,4S))

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CAT No: VS-T066053
CAS No: 2459302-75-9
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib N-hydroxy Impurity

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CAT No: VS-T066054
CAS No: 2459302-76-0
Mol.F.: C13H19N5O
Mol.Wt.: 261.3
Status: Custom Synthesis

1-Benzyl-4-methylpiperidin-3-one

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CAT No: VS-T066055
CAS No: 32018-96-5
Mol.F.: C13H17NO
Mol.Wt.: 203.3
Status: Custom Synthesis

7-Deazapurine

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CAT No: VS-T066056
CAS No: 271-70-5
Mol.F.: C6H7N3
Mol.Wt.: 121.1
Status: Custom Synthesis

Tofacitinib Keto Impurity

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CAT No: VS-T066057
CAS No: 1236267-27-8
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Hydroxy Impurity

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CAT No: VS-T066058
CAS No: N/A
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Citrate Recamic Mixture

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CAT No: VS-T066059
CAS No: N/A
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Mixure of Diastereomers

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CAT No: VS-T066060
CAS No: 2664002-63-3
Mol.F.: C16H20N6O : C6H8O7
Mol.Wt.: 312.4 : 192.1
Status: Custom Synthesis

Tofacitinib Diastereomer 1 and 2

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CAT No: VS-T066061
CAS No: N/A
Mol.F.: C16H20N6O : C6H8O7
Mol.Wt.: 312.4 : 192.1
Status: In Stock

Tofacitinib Related Substance 1

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CAT No: VS-T066062
CAS No: 2101958-24-9
Mol.F.: C16H22N6O3
Mol.Wt.: 346.4
Status: Custom Synthesis

Tofacitinib Related Substance 2

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CAT No: VS-T066063
CAS No: 2101951-13-5
Mol.F.: C16H22N6O3
Mol.Wt.: 346.4
Status: Custom Synthesis

Tofacitinib Related Substance 4

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CAT No: VS-T066064
CAS No: N/A
Mol.F.: C18H26N6O2
Mol.Wt.: 358.4
Status: Custom Synthesis

Tofacitinib Related Substance 5

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CAT No: VS-T066065
CAS No: N/A
Mol.F.: C16H22N6O2
Mol.Wt.: 330.4
Status: Custom Synthesis

Tofacitinib Related Substance 6

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CAT No: VS-T066066
CAS No: N/A
Mol.F.: C16H22N6O4
Mol.Wt.: 362.4
Status: Custom Synthesis

Tofacitinib Dihydro Impurity

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CAT No: VS-T066067
CAS No: 1640972-35-5
Mol.F.: C16H22N6O
Mol.Wt.: 314.4
Status: Custom Synthesis

Tofacitinib Related Substance 8

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CAT No: VS-T066068
CAS No: 2101951-20-4
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Related Substance 9

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CAT No: VS-T066069
CAS No: N/A
Mol.F.: C21H27N7O3
Mol.Wt.: 425.5
Status: Custom Synthesis

Tofacitinib Related Substance 10

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CAT No: VS-T066070
CAS No: N/A
Mol.F.: C32H40N12O2
Mol.Wt.: 624.8
Status: Custom Synthesis

Tofacitinib Related Substance 11

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CAT No: VS-T066071
CAS No: N/A
Mol.F.: C16H19ClN6O
Mol.Wt.: 346.8
Status: Custom Synthesis

Tofacitinib Impurity 2

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CAT No: VS-T066072
CAS No: 1640971-51-2
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Impurity 3

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CAT No: VS-T066073
CAS No: 1206825-36-6
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Impurity 4

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CAT No: VS-T066074
CAS No: 1675248-18-6
Mol.F.: C18H25N5O3
Mol.Wt.: 359.4
Status: Custom Synthesis

Tofacitinib Impurity 5

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CAT No: VS-T066075
CAS No: 1354621-59-2
Mol.F.: C14H22N2
Mol.Wt.: 218.3
Status: Custom Synthesis

Tofacitinib Impurity 6

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CAT No: VS-T066076
CAS No: N/A
Mol.F.: C19H22N8
Mol.Wt.: 362.4
Status: Custom Synthesis

Tofacitinib Impurity 7

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CAT No: VS-T066077
CAS No: N/A
Mol.F.: C13H19N5
Mol.Wt.: 245.3
Status: Custom Synthesis

Tofacitinib Impurity 8

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CAT No: VS-T066078
CAS No: 1527525-58-1
Mol.F.: C15H18N6O
Mol.Wt.: 298.4
Status: Custom Synthesis

Tofacitinib Impurity 9

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CAT No: VS-T066079
CAS No: 2382711-65-9
Mol.F.: C34H42N10O2
Mol.Wt.: 622.8
Status: Custom Synthesis

Tofacitinib Impurity 27

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CAT No: VS-T066080
CAS No: N/A
Mol.F.: C23H34N6O3
Mol.Wt.: 442.6
Status: Custom Synthesis

Tofacitinib Impurity 28

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CAT No: VS-T066081
CAS No: 2227199-31-5
Mol.F.: C20H29N5O3
Mol.Wt.: 387.5
Status: Custom Synthesis

Tofacitinib Impurity 29

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CAT No: VS-T066082
CAS No: N/A
Mol.F.: C21H27N7O3
Mol.Wt.: 425.5
Status: Custom Synthesis

Tofacitinib Impurity 30

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CAT No: VS-T066083
CAS No: 105-56-6
Mol.F.: C5H7NO2
Mol.Wt.: 113.1
Status: Custom Synthesis

Tofacitinib Impurity 31

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CAT No: VS-T066084
CAS No: 344418-61-7
Mol.F.: C15H21N5O
Mol.Wt.: 287.4
Status: Custom Synthesis

Tofacitinib Impurity 32

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CAT No: VS-T066085
CAS No: 477600-69-4
Mol.F.: C14H22N2
Mol.Wt.: 218.3
Status: Custom Synthesis

Tofacitinib Impurity 33

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CAT No: VS-T066086
CAS No: 16372-08-0
Mol.F.: C6H6ClN3
Mol.Wt.: 155.6
Status: Custom Synthesis

Tofacitinib Impurity 34

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CAT No: VS-T066087
CAS No: 1111638-10-8
Mol.F.: C5H3ClN4
Mol.Wt.: 154.6
Status: Custom Synthesis

Tofacitinib Impurity 35

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CAT No: VS-T066088
CAS No: 1092578-47-6
Mol.F.: C16H20N6O
Mol.Wt.: 312.4
Status: Custom Synthesis

Tofacitinib Impurity 36

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CAT No: VS-T066089
CAS No: N/A
Mol.F.: C16H20N6O2
Mol.Wt.: 328.4
Status: Custom Synthesis

Tofacitinib Impurity 40

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CAT No: VS-T066090
CAS No: 477600-70-7
Mol.F.: C14H22N2
Mol.Wt.: 218.3
Status: Custom Synthesis

Tofacitinib -Dihydro Intermediate

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CAT No: VS-T066091
CAS No: NA
Mol.F.: C13H21N5
Mol.Wt.: 247.35
Status: Custom Synthesis

Tofacitinib -Enantiomer intermediate

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CAT No: VS-T066092
CAS No: NA
Mol.F.: C27H31N5O2S
Mol.Wt.: 489.64
Status: Custom Synthesis

Tofacitinib Impurity 41

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CAT No: VS-T066093
CAS No: NA
Mol.F.: C28H44N4
Mol.Wt.: 436.69
Status: Custom Synthesis

Tofacitinib Impurity 42

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CAT No: VS-T066094
CAS No: NA
Mol.F.: C54H62N10O4S2
Mol.Wt.: 979.28
Status: Custom Synthesis

Tofacitinib Impurity 43

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CAT No: VS-T066095
CAS No: NA
Mol.F.: C32H40N12O2
Mol.Wt.: 624.75
Status: Custom Synthesis

N-Nitroso Tofacitinib Impurity

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CAT No: VS-T066096
CAS No: NA
Mol.F.: C13H18N6O
Mol.Wt.: 274.32
Status: Custom Synthesis

N-Nitroso Tofacitinib Impurity 2

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CAT No: VS-T066097
CAS No: NA
Mol.F.: C16H22N6O2
Mol.Wt.: 330.4
Status: Custom Synthesis

N-Nitroso Tofacitinib Impurity 3

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CAT No: VS-T066098
CAS No: NA
Mol.F.: C14H21N3O
Mol.Wt.: 247.34
Status: Custom Synthesis

Tofacitinib Desmethyl Nitrosamine impurity

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CAT No: VS-T066099
CAS No: NA
Mol.F.: C15H17N7O2
Mol.Wt.: 327.34
Status: Custom Synthesis

Tofacitinib Impurity 44

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CAT No: VS-T066100
CAS No: 1269823-96-2
Mol.F.: C16H20N6O2
Mol.Wt.: 328.38
Status: Custom Synthesis
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