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.
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 027470
CAS :
Molecular Formula : C24H30D4N6O4S
Molecular Weight : 506.65
stdClass Object ( [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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 027500
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 028630
Molecular Formula : C28H29D5N6O4S
Molecular Weight : 555.70
stdClass Object ( [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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 028770
Molecular Formula : C21H20D8N6O3S2
Molecular Weight : 484.66
stdClass Object ( [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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 046860
Molecular Formula : C23H27D5N6O4S
Molecular Weight : 493.63
stdClass Object ( [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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 054300
Molecular Formula : C22H27D3N6O4S
Molecular Weight : 477.59
stdClass Object ( [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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 058600
Molecular Formula : C23H28D4N6O4S
Molecular Weight : 492.63
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 075440
Molecular Formula : C23H24D8N6O3S2
Molecular Weight : 512.72
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 [latest_product] => 0 [linkproducts] => 1 [offers_id] => 8 [offers_name] => Ready Stock [offers_status] => 1 [offers_start_date] => 2024-12-16 [offers_end_date] => 2024-12-31 [pageview] => 2 [offers_slug] => ready-stock [offers_product_id] => 49079 [offers_product_code] => PA STI 079220 [offers_master_id] => 8 [offer_percentage] => 20 % OFF [offers_product_main_cat] => Pharmaceutical Reference Standards )
Catalogue No.:PA STI 079220
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 079230
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 082870
Molecular Formula : C22H27D3N6O3S2
Molecular Weight : 493.66
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 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 19 0081007
Molecular Formula : C24H34N6O3S2
Molecular Weight : 518.7
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