A citrate salt of Sildenafil sold under the brand name of Viagra. Sildenafil is used for the treatment of erectile dysfunction and pulmonary arterial hypertension. 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 Citrate API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
stdClass Object ( [pname] => Sildenafil Amino Amide Impurity [catalogue_number] => PA 19 09520 [category_ids] => ,79,71,85,83, [chemical_name] => [weight] => 182.22 [form] => C8H14N4O [cas] => 139756-02-8 [pslug] => 139756-02-8-sildenafil-amino-amide-impurity-pa1909520 [latest_product] => 0 [linkproducts] => 1 [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 09520
CAS :
Molecular Formula : C8H14N4O
Molecular Weight : 182.22
stdClass Object ( [pname] => Sildenafil Lactam Impurity [catalogue_number] => PA 19 09560 [category_ids] => ,85,83,70, [chemical_name] => [weight] => 312.37 [form] => C17H20N4O2 [cas] => 139756-21-1 [pslug] => 139756-21-1-sildenafil-lactam-impurity-pa1909560 [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 09560
Molecular Formula : C17H20N4O2
Molecular Weight : 312.37
stdClass Object ( [pname] => Sildenafil Chlorosulfonyl Impurity [catalogue_number] => PA 19 09570 [category_ids] => ,85,83,122, [chemical_name] => [weight] => 410.88 [form] => C17H19ClN4O4S [cas] => 139756-22-2 [pslug] => 139756-22-2-sildenafil-chlorosulfonyl-impurity-pa1909570 [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 09570
Molecular Formula : C17H19ClN4O4S
Molecular Weight : 410.88
stdClass Object ( [pname] => 5-(5-Carboxy-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one [catalogue_number] => PA 19 09640 [category_ids] => ,85,83,70, [chemical_name] => [weight] => 356.38 [form] => C18H20N4O4 [cas] => 147676-78-6 [pslug] => 147676-78-6-5-5-carboxy-2-ethoxyphenyl-1-methyl-3-n-propyl-1-6-dihydro-7h-pyrazolo-4-3-d-pyrimidin-7-one-pa1909640 [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 09640
Molecular Formula : C18H20N4O4
Molecular Weight : 356.38
stdClass Object ( [pname] => 4-Amino-1-methyl-5-propyl-1H-pyrazole-3-carboxamide [catalogue_number] => PA 19 09650 [category_ids] => ,79,71,85,83, [chemical_name] => [weight] => 182.22 [form] => C8H14N4O [cas] => 247583-78-4 [pslug] => 247583-78-4-4-amino-1-methyl-5-propyl-1h-pyrazole-3-carboxamide-pa1909650 [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 09650
stdClass Object ( [pname] => Nor Acetildenafil [catalogue_number] => PA 19 09535 [category_ids] => ,85,83,78,70,82, [chemical_name] => [weight] => 452.55 [form] => C24H32N6O3 [cas] => 949091-38-7 [pslug] => 949091-38-7-nor-acetildenafil-pa1909535 [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 09535
Molecular Formula : C24H32N6O3
Molecular Weight : 452.55
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