Allopurinol is a purine analog and it is a structural isomer of hypoxanthine. It is an inhibitor of the enzyme xanthine oxidase. Allopurinol is used to treat excess uric acid in the blood and gout. It is sold under the brand name Zyloprim. Reference standards of Allopurinol API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
stdClass Object ( [pname] => Allopurinol - API Standards [catalogue_number] => PA 01 39000 [category_ids] => ,71,85,83,78,70,82, [chemical_name] => [weight] => 136.11 [form] => C5H4N4O [cas] => 315-30-0 [pslug] => 315-30-0-allopurinol-api-standards-pa0139000 [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 01 39000
CAS :
Molecular Formula : C5H4N4O
Molecular Weight : 136.11
stdClass Object ( [pname] => Allopurinol - Impurity B [catalogue_number] => PA 01 39020 [category_ids] => ,71,85,83,78,70,82, [chemical_name] => [weight] => 154.13 [form] => C5H6N4O2 [cas] => 22407-20-1 [pslug] => 22407-20-1-allopurinol-impurity-b-pa0139020 [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 01 39020
Molecular Formula : C5H6N4O2
Molecular Weight : 154.13
stdClass Object ( [pname] => Allopurinol - Impurity C [catalogue_number] => PA 01 39030 [category_ids] => 80,82,78,70,71,83,85 [chemical_name] => [weight] => 178.15 [form] => C6H6N6O [cas] => 1346604-13-4 [pslug] => 1346604-13-4-allopurinol-impurity-c-pa0139030 [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 01 39030
Molecular Formula : C6H6N6O
Molecular Weight : 178.15
stdClass Object ( [pname] => Allopurinol-d2 [catalogue_number] => PA STI 004680 [category_ids] => ,71,85,83,78,70,82,98, [chemical_name] => [weight] => 138.12 [form] => C5H2D2N4O [cas] => 916979-34-5 [pslug] => 916979-34-5-allopurinol-d2-pasti004680 [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 004680
Molecular Formula : C5H2D2N4O
Molecular Weight : 138.12
stdClass Object ( [pname] => 4,6-Dihydroxypyrazolo[3,4-d]pyrimidine-13C,15N2 [catalogue_number] => PA STI 033020 [category_ids] => ,71,76,75,85,83,78,70,82,98, [chemical_name] => [weight] => 155.09 [form] => C413CH4N215N2O2 [cas] => 1217036-71-9 [pslug] => 1217036-71-9-4-6-dihydroxypyrazolo-3-4-d-pyrimidine-13c-15n2-pasti033020 [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 033020
Molecular Formula : C413CH4N215N2O2
Molecular Weight : 155.09
stdClass Object ( [pname] => Allopurinol riboside [catalogue_number] => PA 01 39530 [category_ids] => ,78,70,82, [chemical_name] => [weight] => 268.23 [form] => C10H12N4O5 [cas] => 16220-07-8 [pslug] => 16220-07-8-allopurinol-riboside-pa0139530 [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 01 39530
Molecular Formula : C10H12N4O5
Molecular Weight : 268.23
stdClass Object ( [pname] => Allopurinol - Impurity A (Freebase) [catalogue_number] => PA 01 39011 [category_ids] => ,79,75,78,70,82, [chemical_name] => [weight] => 126.12 [form] => C4H6N4O [cas] => 5334-31-6 [pslug] => 5334-31-6-allopurinol-impurity-a-freebase-pa0139011 [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 01 39011
Molecular Formula : C4H6N4O
Molecular Weight : 126.12
stdClass Object ( [pname] => Oxypurinol [catalogue_number] => PA 01 0391000 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 152.11 [form] => C5H4N4O2 [cas] => 2465-59-0 [pslug] => 2465-59-0-oxypurinol-pa010391000 [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 01 0391000
Molecular Formula : C5H4N4O2
Molecular Weight : 152.11
stdClass Object ( [pname] => Allopurinol Impurity A (IMP/03/17) [catalogue_number] => PA IMP 03 17 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => NA [form] => NA [cas] => NA [pslug] => allopurinol-impurity-a-imp0317-paimp0317 [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 IMP 03 17
Molecular Formula : NA
Molecular Weight : NA
stdClass Object ( [pname] => N-Nitroso Allopurinol [catalogue_number] => PA 01 0391002 [category_ids] => ,70,75,76,78,82,162, [chemical_name] => [weight] => 165.11 [form] => C5H3N5O2 [cas] => NA [pslug] => n-nitroso-allopurinol-pa010391002 [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 01 0391002
Molecular Formula : C5H3N5O2
Molecular Weight : 165.11
stdClass Object ( [pname] => 9-Nitroso-9H-purin-6-ol [catalogue_number] => PA 01 0391003 [category_ids] => ,70,75,76,78,82,162, [chemical_name] => [weight] => 165.11 [form] => C5H3N5O2 [cas] => NA [pslug] => 9-nitroso-9h-purin-6-ol-pa010391003 [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 01 0391003
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