An immunomodulatory drug, Leflunomide is used to treat rheumatoid arthritis and psoriatic arthritis. An inhibitor of enzyme dihydroorotate dehydrogenase which plays a key role in the synthesis of uridine monophosphate (rUMP), which is required for the synthesis of DNA and RNA. Reference standards of Leflunomide API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
stdClass Object ( [pname] => 5-Methylisoxazole-3-carboxylic-d4 Acid [catalogue_number] => PA STI 062330 [category_ids] => ,71,75,98,78,70,82, [chemical_name] => [weight] => 131.12 [form] => C5HD4NO3 [cas] => 1267623-84-6 [pslug] => 1267623-84-6-5-methylisoxazole-3-carboxylic-d4-acid-pasti062330 [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 062330
CAS :
Molecular Formula : C5HD4NO3
Molecular Weight : 131.12
stdClass Object ( [pname] => A77 1726-d4 [catalogue_number] => PA STI 008740 [category_ids] => ,76,75,117,98, [chemical_name] => [weight] => 274.23 [form] => C12H5D4F3N2O2 [cas] => 1185240-22-5 [pslug] => 1185240-22-5-a77-1726-d4-pasti008740 [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 008740
Molecular Formula : C12H5D4F3N2O2
Molecular Weight : 274.23
stdClass Object ( [pname] => 5-Hydroxy Leflunomide-d4 (Metabolite M2) [catalogue_number] => PA STI 049540 [category_ids] => ,80,71,98,76,75,78,70,82, [chemical_name] => [weight] => 290.23 [form] => C12H5D4F3N2O3 [cas] => 1794789-76-6 [pslug] => 1794789-76-6-5-hydroxy-leflunomide-d4-metabolite-m2-pasti049540 [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 049540
Molecular Formula : C12H5D4F3N2O3
Molecular Weight : 290.23
stdClass Object ( [pname] => Leflunomide-d4 [catalogue_number] => PA STI 056310 [category_ids] => ,80,71,98,78,70,82,81, [chemical_name] => [weight] => 274.23 [form] => C12H5D4F3N2O2 [cas] => 1189987-23-2 [pslug] => 1189987-23-2-leflunomide-d4-pasti056310 [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 056310
stdClass Object ( [pname] => rac Lenalidomide-13C5 [catalogue_number] => PA STI 056320 [category_ids] => ,98,78,70,82, [chemical_name] => [weight] => 264.22 [form] => C813C5H13N3O3 [cas] => 1219332-91-8 [pslug] => 1219332-91-8-rac-lenalidomide-13c5-pasti056320 [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 056320
Molecular Formula : C813C5H13N3O3
Molecular Weight : 264.22
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