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] => 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] => 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] => 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
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