Sildenafil-impurities | Pharmaffiliates

sildenafil

Sildenafil is used for the treatment of erectile dysfunction and pulmonary arterial hypertension. It is sold under the brand name of Viagra. Sildenafil inhibits an enzyme cGMP-specific phosphodiesterase type 5 that promotes degradation of cGMP, which regulates blood flow in the penis.Reference standards of Sildenafil API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

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    [pname] => Sildenafil - API Standards 
    [catalogue_number] => PA 19 08000
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 474.58
    [form] => C22H30N6O4S
    [cas] => 139755-83-2
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PA 19 08000

Sildenafil - API Standards


  • Catalogue No.:PA 19 08000

  • CAS :

    139755-83-2

  • Molecular Formula : C22H30N6O4S

  • Molecular Weight : 474.58

stdClass Object
(
    [pname] => O-Desethyl-O-propyl Methisosildenafil-d4
    [catalogue_number] => PA STI 027470
    [category_ids] => ,70,71,74,78,80,82,98,
    [chemical_name] => 
    [weight] => 506.65
    [form] => C24H30D4N6O4S
    [cas] => 2124278-11-9
    [pslug] => 2124278-11-9-o-desethyl-o-propyl-methisosildenafil-d4-pasti027470
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PA STI 027470

O-Desethyl-O-propyl Methisosildenafil-d4


  • Catalogue No.:PA STI 027470

  • CAS :

    2124278-11-9

  • Molecular Formula : C24H30D4N6O4S

  • Molecular Weight : 506.65

stdClass Object
(
    [pname] => Descarbonsildenafil-d6
    [catalogue_number] => PA STI 027480
    [category_ids] => ,70,78,79,80,82,88,98,
    [chemical_name] => 
    [weight] => 468.60
    [form] => C21H24D6N6O4S
    [cas] => NA
    [pslug] => descarbonsildenafil-d6-pasti027480
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PA STI 027480

Descarbonsildenafil-d6


  • Catalogue No.:PA STI 027480

  • CAS :

    NA

  • Molecular Formula : C21H24D6N6O4S

  • Molecular Weight : 468.60

stdClass Object
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    [pname] => Desethyl Sildenafil-d3
    [catalogue_number] => PA STI 027500
    [category_ids] => ,80,71,76,75,78,70,82,88,98,
    [chemical_name] => 
    [weight] => 449.52
    [form] => C20H23D3N6O4S
    [cas] => 1346603-75-5
    [pslug] => 1346603-75-5-desethyl-sildenafil-d3-pasti027500
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PA STI 027500

Desethyl Sildenafil-d3


  • Catalogue No.:PA STI 027500

  • CAS :

    1346603-75-5

  • Molecular Formula : C20H23D3N6O4S

  • Molecular Weight : 449.52

stdClass Object
(
    [pname] => N-Desmethyl-N-benzyl Sildenafil-d5
    [catalogue_number] => PA STI 028630
    [category_ids] => ,80,71,78,70,82,88,98,
    [chemical_name] => 
    [weight] => 555.70
    [form] => C28H29D5N6O4S
    [cas] => NA
    [pslug] => n-desmethyl-n-benzyl-sildenafil-d5-pasti028630
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PA STI 028630

N-Desmethyl-N-benzyl Sildenafil-d5


  • Catalogue No.:PA STI 028630

  • CAS :

    NA

  • Molecular Formula : C28H29D5N6O4S

  • Molecular Weight : 555.70

stdClass Object
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    [pname] => Desmethyl Thiosildenafil-d8
    [catalogue_number] => PA STI 028770
    [category_ids] => ,74,71,78,70,82,88,98,
    [chemical_name] => 
    [weight] => 484.66
    [form] => C21H20D8N6O3S2
    [cas] => 1215321-44-0
    [pslug] => 1215321-44-0-desmethyl-thiosildenafil-d8-pasti028770
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PA STI 028770

Desmethyl Thiosildenafil-d8


  • Catalogue No.:PA STI 028770

  • CAS :

    1215321-44-0

  • Molecular Formula : C21H20D8N6O3S2

  • Molecular Weight : 484.66

stdClass Object
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    [pname] => Homo Sildenafil-d5
    [catalogue_number] => PA STI 046860
    [category_ids] => ,71,98,78,70,82,88,
    [chemical_name] => 
    [weight] => 493.63
    [form] => C23H27D5N6O4S
    [cas] => 1216711-61-3
    [pslug] => 1216711-61-3-homo-sildenafil-d5-pasti046860
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PA STI 046860

Homo Sildenafil-d5


  • Catalogue No.:PA STI 046860

  • CAS :

    1216711-61-3

  • Molecular Formula : C23H27D5N6O4S

  • Molecular Weight : 493.63

stdClass Object
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    [pname] => Iso Sildenafil-d3
    [catalogue_number] => PA STI 054300
    [category_ids] => ,71,98,78,70,82,88,
    [chemical_name] => 
    [weight] => 477.59
    [form] => C22H27D3N6O4S
    [cas] => 1794829-17-6
    [pslug] => 1794829-17-6-iso-sildenafil-d3-pasti054300
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PA STI 054300

Iso Sildenafil-d3


  • Catalogue No.:PA STI 054300

  • CAS :

    1794829-17-6

  • Molecular Formula : C22H27D3N6O4S

  • Molecular Weight : 477.59

stdClass Object
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    [pname] => Methisosildenafil-d4
    [catalogue_number] => PA STI 058600
    [category_ids] => ,80,71,98,85,83,78,70,82,88,
    [chemical_name] => 
    [weight] => 492.63
    [form] => C23H28D4N6O4S
    [cas] =>  1246819-66-8
    [pslug] => 1246819-66-8-methisosildenafil-d4-pasti058600
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PA STI 058600

Methisosildenafil-d4


  • Catalogue No.:PA STI 058600

  • CAS :

    1246819-66-8

  • Molecular Formula : C23H28D4N6O4S

  • Molecular Weight : 492.63

stdClass Object
(
    [pname] => Piperazonifil-d5
    [catalogue_number] => PA STI 073900
    [category_ids] => ,98,78,70,82,
    [chemical_name] => 
    [weight] => 487.61
    [form] => C25H29D5N6O4
    [cas] => NA
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PA STI 073900

Piperazonifil-d5


  • Catalogue No.:PA STI 073900

  • CAS :

    NA

  • Molecular Formula : C25H29D5N6O4

  • Molecular Weight : 487.61

stdClass Object
(
    [pname] => Propoxyphenyl-thiosildenafil-d8
    [catalogue_number] => PA STI 075440
    [category_ids] => ,74,71,98,78,70,82,88,
    [chemical_name] => 
    [weight] => 512.72
    [form] => C23H24D8N6O3S2
    [cas] => NA
    [pslug] => propoxyphenyl-thiosildenafil-d8-pasti075440
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PA STI 075440

Propoxyphenyl-thiosildenafil-d8


  • Catalogue No.:PA STI 075440

  • CAS :

    NA

  • Molecular Formula : C23H24D8N6O3S2

  • Molecular Weight : 512.72

stdClass Object
(
    [pname] => Pyrazole N-Demethyl Sildenafil-d3
    [catalogue_number] => PA STI 076040
    [category_ids] => ,98,85,83,78,70,82,
    [chemical_name] => 
    [weight] => 463.57
    [form] => C21H25D3N6O4S
    [cas] => 1185044-03-4
    [pslug] => 1185044-03-4-pyrazole-n-demethyl-sildenafil-d3-pasti076040
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PA STI 076040

Pyrazole N-Demethyl Sildenafil-d3


  • Catalogue No.:PA STI 076040

  • CAS :

    1185044-03-4

  • Molecular Formula : C21H25D3N6O4S

  • Molecular Weight : 463.57

stdClass Object
(
    [pname] => Sildenafil-d3
    [catalogue_number] => PA STI 079220
    [category_ids] => ,71,98,78,70,82,88,
    [chemical_name] => 
    [weight] => 477.60
    [form] => C22H27D3N6O4S
    [cas] => 1126745-90-1
    [pslug] => 1126745-90-1-sildenafil-d3-pasti079220
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PA STI 079220

Sildenafil-d3


  • Catalogue No.:PA STI 079220

  • CAS :

    1126745-90-1

  • Molecular Formula : C22H27D3N6O4S

  • Molecular Weight : 477.60

stdClass Object
(
    [pname] => Sildenafil-d8
    [catalogue_number] => PA STI 079230
    [category_ids] => ,79,80,71,98,78,70,82,88,
    [chemical_name] => 
    [weight] => 482.63
    [form] => C22H22D8N6O4S
    [cas] => 951385-68-5
    [pslug] => 951385-68-5-sildenafil-d8-pasti079230
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PA STI 079230

Sildenafil-d8


  • Catalogue No.:PA STI 079230

  • CAS :

    951385-68-5

  • Molecular Formula : C22H22D8N6O4S

  • Molecular Weight : 482.63

stdClass Object
(
    [pname] => Thiosildenafil-d3
    [catalogue_number] => PA STI 082870
    [category_ids] => ,74,71,78,70,82,88,98,
    [chemical_name] => 
    [weight] => 493.66
    [form] => C22H27D3N6O3S2
    [cas] => 1216671-11-2
    [pslug] => 1216671-11-2-thiosildenafil-d3-pasti082870
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PA STI 082870

Thiosildenafil-d3


  • Catalogue No.:PA STI 082870

  • CAS :

    1216671-11-2

  • Molecular Formula : C22H27D3N6O3S2

  • Molecular Weight : 493.66

stdClass Object
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    [pname] => 4-[[2-Ethoxy-5-[(4-methyl-1-piperazinyl)- sulfonyl]benzoyl]amino]-1-methyl-3-propyl- 1H-pyrazole-5-carboxamide
    [catalogue_number] => PA 19 0081000
    [category_ids] => ,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 492.6
    [form] => C22H32N6O5S
    [cas] => 200575-15-1
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PA 19 0081000

4-[[2-Ethoxy-5-[(4-methyl-1-piperazinyl)- sulfonyl]benzoyl]amino]-1-methyl-3-propyl- 1H-pyrazole-5-carboxamide


  • Catalogue No.:PA 19 0081000

  • CAS :

    200575-15-1

  • Molecular Formula : C22H32N6O5S

  • Molecular Weight : 492.6

stdClass Object
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    [pname] => 3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxylic acid
    [catalogue_number] => PA 19 0081001
    [category_ids] => ,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 227.22
    [form] => C9H13N3O4
    [cas] => 1004455-71-3
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PA 19 0081001

3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxylic acid


  • Catalogue No.:PA 19 0081001

  • CAS :

    1004455-71-3

  • Molecular Formula : C9H13N3O4

  • Molecular Weight : 227.22

stdClass Object
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    [pname] => 5-(2-Ethoxyphenyl)-3-isobutyl-1-methyl-1,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
    [catalogue_number] => PA 19 0081002
    [category_ids] => ,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 326.4
    [form] => C18H22N4O2
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PA 19 0081002

5-(2-Ethoxyphenyl)-3-isobutyl-1-methyl-1,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one


  • Catalogue No.:PA 19 0081002

  • CAS :

    1467610-65-6

  • Molecular Formula : C18H22N4O2

  • Molecular Weight : 326.4

stdClass Object
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    [pname] => 3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxamide
    [catalogue_number] => PA 19 0081003
    [category_ids] => ,75,76,78,70,82,
    [chemical_name] => 
    [weight] => 226.24
    [form] => C9H14N4O3
    [cas] => 911715-34-9
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PA 19 0081003

3-Isobutyl-1-methyl-4-nitro-1H-pyrazole-5-carboxamide


  • Catalogue No.:PA 19 0081003

  • CAS :

    911715-34-9

  • Molecular Formula : C9H14N4O3

  • Molecular Weight : 226.24

stdClass Object
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    [pname] => 2-(2-Ethoxyphenyl)-5-methyl-7-propyl-3,5-dihydro-4H-pyrrolo[3,4-d]pyrimidin-4-one
    [catalogue_number] => PA 19 0081004
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    [chemical_name] => 
    [weight] => 311.39
    [form] => C18H21N3O2
    [cas] => NA
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PA 19 0081004

2-(2-Ethoxyphenyl)-5-methyl-7-propyl-3,5-dihydro-4H-pyrrolo[3,4-d]pyrimidin-4-one


  • Catalogue No.:PA 19 0081004

  • CAS :

    NA

  • Molecular Formula : C18H21N3O2

  • Molecular Weight : 311.39

stdClass Object
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    [pname] => 5-(2-Ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-1-methyl-6-nitroso-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
    [catalogue_number] => PA 19 0081005
    [category_ids] => ,70,78,82,162,
    [chemical_name] => 
    [weight] => 503.58
    [form] => C22H29N7O5S
    [cas] => NA
    [pslug] => 5-2-ethoxy-5-4-methylpiperazin-1-yl-sulfonyl-phenyl-1-methyl-6-nitroso-3-propyl-1-6-dihydro-7h-pyrazolo-4-3-d-pyrimidin-7-one-pa190081005
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PA 19 0081005

5-(2-Ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-1-methyl-6-nitroso-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one


  • Catalogue No.:PA 19 0081005

  • CAS :

    NA

  • Molecular Formula : C22H29N7O5S

  • Molecular Weight : 503.58

stdClass Object
(
    [pname] =>  5-(2-Ethoxy-5-((4-nitrosopiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
    [catalogue_number] => PA 19 0081006
    [category_ids] => ,70,78,82,162,
    [chemical_name] => 
    [weight] => 489.55
    [form] => C21H27N7O5S
    [cas] => NA
    [pslug] => 5-2-ethoxy-5-4-nitrosopiperazin-1-yl-sulfonyl-phenyl-1-methyl-3-propyl-1-6-dihydro-7h-pyrazolo-4-3-d-pyrimidin-7-one-pa190081006
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PA 19 0081006

 5-(2-Ethoxy-5-((4-nitrosopiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one


  • Catalogue No.:PA 19 0081006

  • CAS :

    NA

  • Molecular Formula : C21H27N7O5S

  • Molecular Weight : 489.55

stdClass Object
(
    [pname] => Propoxy phenylthio Aildenafil
    [catalogue_number] => PA 19 0081007
    [category_ids] => ,80,71,78,82,
    [chemical_name] => 
    [weight] => 518.7
    [form] => C24H34N6O3S2
    [cas] => 856190-49-3
    [pslug] => 856190-49-3-propoxy-phenylthio-aildenafil-pa190081007
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PA 19 0081007

Propoxy phenylthio Aildenafil


  • Catalogue No.:PA 19 0081007

  • CAS :

    856190-49-3

  • Molecular Formula : C24H34N6O3S2

  • Molecular Weight : 518.7

stdClass Object
(
    [pname] => Oxohongdenafil
    [catalogue_number] => PA 19 0081008
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 480.57
    [form] => C25H32N6O4
    [cas] => 1446144-70-2
    [pslug] => 1446144-70-2-oxohongdenafil-pa190081008
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PA 19 0081008

Oxohongdenafil


  • Catalogue No.:PA 19 0081008

  • CAS :

    1446144-70-2

  • Molecular Formula : C25H32N6O4

  • Molecular Weight : 480.57

stdClass Object
(
    [pname] => Mirodenafil
    [catalogue_number] => PA 19 0081009
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 531.67
    [form] => C26H37N5O5S
    [cas] => 862189-95-5
    [pslug] => 862189-95-5-mirodenafil-pa190081009
    [latest_product] => 0
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PA 19 0081009

Mirodenafil


  • Catalogue No.:PA 19 0081009

  • CAS :

    862189-95-5

  • Molecular Formula : C26H37N5O5S

  • Molecular Weight : 531.67

stdClass Object
(
    [pname] => Mutaprodenafil
    [catalogue_number] => PA 19 0081010
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 629.76
    [form] => C27H35N9O5S2
    [cas] => 1387577-30-1
    [pslug] => 1387577-30-1-mutaprodenafil-pa190081010
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PA 19 0081010

Mutaprodenafil


  • Catalogue No.:PA 19 0081010

  • CAS :

    1387577-30-1

  • Molecular Formula : C27H35N9O5S2

  • Molecular Weight : 629.76

stdClass Object
(
    [pname] => Thiosildenafil
    [catalogue_number] => PA 19 0081011
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 490.64
    [form] => C22H30N6O3S2
    [cas] => 479073-79-5
    [pslug] => 479073-79-5-thiosildenafil-pa190081011
    [latest_product] => 0
    [linkproducts] => 0
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PA 19 0081011

Thiosildenafil


  • Catalogue No.:PA 19 0081011

  • CAS :

    479073-79-5

  • Molecular Formula : C22H30N6O3S2

  • Molecular Weight : 490.64

stdClass Object
(
    [pname] => Nitrodenafil
    [catalogue_number] => PA 19 0081012
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 357.37
    [form] => C17H19N5O4
    [cas] => 147676-99-1
    [pslug] => 147676-99-1-nitrodenafil-pa190081012
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PA 19 0081012

Nitrodenafil


  • Catalogue No.:PA 19 0081012

  • CAS :

    147676-99-1

  • Molecular Formula : C17H19N5O4

  • Molecular Weight : 357.37

stdClass Object
(
    [pname] => Norneosildenafil
    [catalogue_number] => PA 19 0081013
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 459.57
    [form] => C22H29N5O4S
    [cas] => 371959-09-0
    [pslug] => 371959-09-0-norneosildenafil-pa190081013
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PA 19 0081013

Norneosildenafil


  • Catalogue No.:PA 19 0081013

  • CAS :

    371959-09-0

  • Molecular Formula : C22H29N5O4S

  • Molecular Weight : 459.57

stdClass Object
(
    [pname] => Dimethylsildenafil
    [catalogue_number] => PA 19 0081014
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 488.61
    [form] => C23H32N6O4S
    [cas] => 1416130-63-6
    [pslug] => 1416130-63-6-dimethylsildenafil-pa190081014
    [latest_product] => 0
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PA 19 0081014

Dimethylsildenafil


  • Catalogue No.:PA 19 0081014

  • CAS :

    1416130-63-6

  • Molecular Formula : C23H32N6O4S

  • Molecular Weight : 488.61

stdClass Object
(
    [pname] => Gendenafil
    [catalogue_number] => PA 19 0081015
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 354.41
    [form] => C19H22N4O3
    [cas] => 147676-66-2
    [pslug] => 147676-66-2-gendenafil-pa190081015
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PA 19 0081015

Gendenafil


  • Catalogue No.:PA 19 0081015

  • CAS :

    147676-66-2

  • Molecular Formula : C19H22N4O3

  • Molecular Weight : 354.41

stdClass Object
(
    [pname] => Thioquinapiperifil Dihydrochloride
    [catalogue_number] => PA 19 0081016
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 521.51
    [form] => C24H30Cl2N6OS
    [cas] => 204077-66-7
    [pslug] => 204077-66-7-thioquinapiperifil-dihydrochloride-pa190081016
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PA 19 0081016

Thioquinapiperifil Dihydrochloride


  • Catalogue No.:PA 19 0081016

  • CAS :

    204077-66-7

  • Molecular Formula : C24H30Cl2N6OS

  • Molecular Weight : 521.51

stdClass Object
(
    [pname] => Dithiodesmethylcarbodenafil
    [catalogue_number] => PA 19 0081017
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 470.65
    [form] => C23H30N6OS2
    [cas] => 1333233-46-7
    [pslug] => 1333233-46-7-dithiodesmethylcarbodenafil-pa190081017
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PA 19 0081017

Dithiodesmethylcarbodenafil


  • Catalogue No.:PA 19 0081017

  • CAS :

    1333233-46-7

  • Molecular Formula : C23H30N6OS2

  • Molecular Weight : 470.65

stdClass Object
(
    [pname] => Hydroxythiohomosildenafil
    [catalogue_number] => PA 19 0081018
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 520.67
    [form] => C23H32N6O4S2
    [cas] => 479073-82-0
    [pslug] => 479073-82-0-hydroxythiohomosildenafil-pa190081018
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PA 19 0081018

Hydroxythiohomosildenafil


  • Catalogue No.:PA 19 0081018

  • CAS :

    479073-82-0

  • Molecular Formula : C23H32N6O4S2

  • Molecular Weight : 520.67

stdClass Object
(
    [pname] => Benzyl Sildenafil
    [catalogue_number] => PA 19 0081019
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 550.68
    [form] => C28H34N6O4S
    [cas] => 1446089-82-2
    [pslug] => 1446089-82-2-benzyl-sildenafil-pa190081019
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PA 19 0081019

Benzyl Sildenafil


  • Catalogue No.:PA 19 0081019

  • CAS :

    1446089-82-2

  • Molecular Formula : C28H34N6O4S

  • Molecular Weight : 550.68

stdClass Object
(
    [pname] => Desmethylcarbodenafil
    [catalogue_number] => PA 19 0081020
    [category_ids] => ,78,70,82,
    [chemical_name] => 
    [weight] => 438.53
    [form] => C23H30N6O3
    [cas] => 147676-79-7
    [pslug] => 147676-79-7-desmethylcarbodenafil-pa190081020
    [latest_product] => 0
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PA 19 0081020

Desmethylcarbodenafil


  • Catalogue No.:PA 19 0081020

  • CAS :

    147676-79-7

  • Molecular Formula : C23H30N6O3

  • Molecular Weight : 438.53