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Des(methylpiperazinyl) Chlorosulfone Impurity

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Chemical Name: 4-Ethoxy-3-(7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d] pyrimidin-5-yl) benzene-1-sulfonyl chloride
CAT No: VS-S023017
CAS No: 139756-31-3
Mol.F. C16H17ClN4O4S
Mol.Wt.: 396.9
Status: Custom Synthesis


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CAT No: VS-S023000
CAS No: 139755-83-2
Mol.F.: C22H30N6O4S
Mol.Wt.: 474.6
Status: Custom Synthesis

Sildenafil EP Impurity A

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CAT No: VS-S023001
CAS No: 1391053-95-4
Mol.F.: C23H32N6O4S
Mol.Wt.: 488.6
Status: In Stock

Sildenafil EP Impurity B

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CAT No: VS-S023002
CAS No: 1094598-75-0
Mol.F.: C22H30N6O5S
Mol.Wt.: 490.6
Status: In Stock

Sildenafil Impurity B

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CAT No: VS-S023003
CAS No: 200575-15-1
Mol.F.: C22H32N6O5S
Mol.Wt.: 492.6
Status: Custom Synthesis

Sildenafil EP Impurity C

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CAT No: VS-S023004
CAS No: 139755-91-2
Mol.F.: C20H26N6O4S
Mol.Wt.: 446.5
Status: In Stock

Sildenafil Impurity C

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CAT No: VS-S023005
CAS No: 139755-95-6
Mol.F.: C21H28N6O4S
Mol.Wt.: 460.6
Status: Custom Synthesis

Sildenafil EP Impurity D

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CAT No: VS-S023006
CAS No: 1357931-55-5
Mol.F.: C17H20N4O5S
Mol.Wt.: 392.4
Status: In Stock

Sildenafil EP Impurity E

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CAT No: VS-S023007
CAS No: 288-32-4
Mol.F.: C3H4N2
Mol.Wt.: 68.1
Status: Limited Stock

Sildenafil EP Impurity F

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CAT No: VS-S023008
CAS No: 139755-82-1
Mol.F.: C21H28N6O4S
Mol.Wt.: 460.6
Status: In Stock

Sildenafil EP Impurity G

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CAT No: VS-S023009
CAS No: 1346602-67-2
Mol.F.: C38H46N10O8S2
Mol.Wt.: 835
Status: In Stock

2-Ethoxybenzoyl Chloride Impurity

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CAT No: VS-S023010
CAS No: 42926-52-3
Mol.F.: C9H9ClO2
Mol.Wt.: 184.6
Status: Custom Synthesis

Sildenafil Amino Amide Impurity

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CAT No: VS-S023011
CAS No: 139756-02-8
Mol.F.: C8H14N4O
Mol.Wt.: 182.2
Status: Custom Synthesis

Sildenafil Carboxylic Acid Impurity

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CAT No: VS-S023012
CAS No: 147676-78-6
Mol.F.: C18H20N4O4
Mol.Wt.: 356.4
Status: Custom Synthesis

Sildenafil Chloroacetyl Impurity

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CAT No: VS-S023013
CAS No: 1058653-74-9
Mol.F.: C19H21ClN4O3
Mol.Wt.: 388.9
Status: Custom Synthesis

Chlorosulfone 2-Methyl Isomer

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CAT No: VS-S023014
CAS No: 501120-42-9
Mol.F.: C17H19ClN4O4S
Mol.Wt.: 410.9
Status: Custom Synthesis

Sildenafil Chlorosulfone Impurity

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CAT No: VS-S023015
CAS No: 139756-22-2
Mol.F.: C17H19ClN4O4S 
Mol.Wt.: 410.9
Status: Custom Synthesis

Chlorosulfone O-Desethyl Impurit

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CAT No: VS-S023016
CAS No: 139756-27-7
Mol.F.: C15H15ClN4O4S
Mol.Wt.: 382.8
Status: Custom Synthesis

Des(methylpiperazinyl) Chlorosulfone Impurity

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CAT No: VS-S023017
CAS No: 139756-31-3
Mol.F.: C16H17ClN4O4S
Mol.Wt.: 396.9
Status: Custom Synthesis

Sildenafil Descarbon Impurity

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CAT No: VS-S023018
CAS No: 1393816-99-3
Mol.F.: C21H30N6O4S
Mol.Wt.: 462.6
Status: Custom Synthesis

Sildenafil Di-Amide Impurity

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CAT No: VS-S023019
CAS No: 139756-03-9
Mol.F.: C17H22N4O3
Mol.Wt.: 330.4
Status: Custom Synthesis

Isobutylpyrazolopyrimidine Impurity

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CAT No: VS-S023020
CAS No: 1346600-82-5
Mol.F.: C9H12N4
Mol.Wt.: 176.2
Status: Custom Synthesis

Sildenafil Lactam Impurity

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CAT No: VS-S023021
CAS No: 139756-21-1
Mol.F.: C17H20N4O2
Mol.Wt.: 312.4
Status: In Stock

Sildenafil N-Desmethyl Thione Impurity

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CAT No: VS-S023022
CAS No: 479073-86-4
Mol.F.: C21H28N6O3S2
Mol.Wt.: 476.6
Status: Custom Synthesis

Iso Sildenafil

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CAT No: VS-S023023
CAS No: 253178-46-0
Mol.F.: C22H30N6O4S
Mol.Wt.: 474.6
Status: Custom Synthesis

Sildenafil Acid Impurity

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CAT No: VS-S023024
CAS No: 139756-00-6
Mol.F.: C8H11N3O4
Mol.Wt.: 213.2
Status: In Stock

Sildenafil Nitroamide

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CAT No: VS-S023025
CAS No: 139756-01-7
Mol.F.: C8H12N4O3
Mol.Wt.: 212.2
Status: In Stock

2-ethoxybenzoic acid

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CAT No: VS-S023026
CAS No: 134-11-2
Mol.F.: C9H10O3
Mol.Wt.: 166.2
Status: Custom Synthesis

Sildenafil Methyl Sulfonate Ester Impurity

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CAT No: VS-S023027
CAS No: 2512206-40-3
Mol.F.: C18H22N4O5S
Mol.Wt.: 406.5
Status: Limited Stock

Amino Sildenafil

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CAT No: VS-S023028
CAS No: 319491-68-4
Mol.F.: C18H23N5O4S
Mol.Wt.: 405.5
Status: Custom Synthesis

Sildenafil Citrate 

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CAT No: VS-S023029
CAS No: 171599-83-0
Mol.F.: C22H30N6O4S : C6H8O7
Mol.Wt.: 474.6 : 192.1
Status: Custom Synthesis

N-Desmethyl Sildenafil-N-β-D-Glucuronide

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CAT No: VS-S023030
CAS No: N/A
Mol.F.: C27H35N6O10S : Na
Mol.Wt.: 635.7 : 23.0
Status: Custom Synthesis

Sildenafil Impurity 1

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CAT No: VS-S023031
CAS No: 501120-38-3
Mol.F.: C17H22N4O3
Mol.Wt.: 330.4
Status: Custom Synthesis

Sildenafil Impurity 2

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CAT No: VS-S023032
CAS No: 1004455-71-3
Mol.F.: C9H13N3O4
Mol.Wt.: 227.2
Status: Custom Synthesis

Sildenafil Impurity 3

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CAT No: VS-S023033
CAS No: 1467610-65-6
Mol.F.: C18H22N4O2
Mol.Wt.: 326.4
Status: Custom Synthesis

Sildenafil Impurity 4

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CAT No: VS-S023034
CAS No: 911715-34-9
Mol.F.: C9H14N4O3
Mol.Wt.: 226.2
Status: Custom Synthesis

Sildenafil Impurity 5

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CAT No: VS-S023035
CAS No: 247583-78-4
Mol.F.: C8H14N4O
Mol.Wt.: 182.2
Status: Custom Synthesis

Sildenafil Impurity 6

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CAT No: VS-S023036
CAS No: 268204-00-8
Mol.F.: C9H16N4O
Mol.Wt.: 196.3
Status: Custom Synthesis

Sildenafil Impurity 7

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CAT No: VS-S023037
CAS No: 247583-72-8
Mol.F.: C8H12N4O3
Mol.Wt.: 212.2
Status: In Stock

Sildenafil Impurity 8

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CAT No: VS-S023038
CAS No: 139755-98-9
Mol.F.: C23H32N6O4S
Mol.Wt.: 488.6
Status: Custom Synthesis

Sildenafil Impurity 9

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CAT No: VS-S023039
CAS No: N/A
Mol.F.: C22H30N6O5S
Mol.Wt.: 490.6
Status: Custom Synthesis

Homo Sildenafil

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CAT No: VS-S023040
CAS No: 642928-07-2
Mol.F.: C23H32N6O4S
Mol.Wt.: 488.61
Status: Custom Synthesis

Sildenafil D8

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CAT No: VS-S023041
CAS No: 951385-68-5
Mol.F.: C22H22D8N6O4S
Mol.Wt.: 482.6
Status: Custom Synthesis

Sildenafil Impurity 10

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CAT No: VS-S023042
CAS No: 360068-47-9
Mol.F.: C8H10ClN3O3
Mol.Wt.: 231.64
Status: Custom Synthesis
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