Also known as L-Dopa which is an amino acid that acts as a precursor for neurotransmitters catecholamines (dopamine, norepinephrine, and epinephrine). Levodopa is used in the treatment of Parkinson's disease and dopamine-responsive dystonia. Reference standards of Levodopa API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
stdClass Object ( [pname] => Levodopa - Impurity C [catalogue_number] => PA 12 12030 [category_ids] => 79,80,97 [chemical_name] => [weight] => 211.21 [form] => C10H13NO4 [cas] => 7636-26-2 [pslug] => 7636-26-2-levodopa-impurity-c-pa1212030 [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 12 12030
CAS :
Molecular Formula : C10H13NO4
Molecular Weight : 211.21
stdClass Object ( [pname] => 4-Hydroxy-3-methoxymandelic Acid [catalogue_number] => PA 12 12510 [category_ids] => ,80,76,75,78,70,82, [chemical_name] => [weight] => 198.17 [form] => C9H10O5 [cas] => 55-10-7 [pslug] => 55-10-7-4-hydroxy-3-methoxymandelic-acid-pa1212510 [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 12 12510
Molecular Formula : C9H10O5
Molecular Weight : 198.17
stdClass Object ( [pname] => 3,4-Dihydroxy-DL-phenylalanine [catalogue_number] => PA 12 12520 [category_ids] => ,80,79,78,70,82, [chemical_name] => [weight] => 197.19 [form] => C9H11NO4 [cas] => 63-84-3 [pslug] => 63-84-3-3-4-dihydroxy-dl-phenylalanine-pa1212520 [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 12 12520
Molecular Formula : C9H11NO4
Molecular Weight : 197.19
stdClass Object ( [pname] => 3-Acetyl-L-tyrosine Hydrochloride [catalogue_number] => PA 12 12530 [category_ids] => ,97,80,75,78,70,82, [chemical_name] => [weight] => 259.69 [form] => C11H14ClNO4 [cas] => 32404-28-7 [pslug] => 32404-28-7-3-acetyl-l-tyrosine-hydrochloride-pa1212530 [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 12 12530
Molecular Formula : C11H14ClNO4
Molecular Weight : 259.69
stdClass Object ( [pname] => 3-Acetyl-L-tyrosine Methyl Ester Hydrochloride [catalogue_number] => PA 12 12540 [category_ids] => ,97,80,75,78,70,82, [chemical_name] => [weight] => 273.71 [form] => C12H16ClNO4 [cas] => 57085-32-2 [pslug] => 57085-32-2-3-acetyl-l-tyrosine-methyl-ester-hydrochloride-pa1212540 [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 12 12540
Molecular Formula : C12H16ClNO4
Molecular Weight : 273.71
stdClass Object ( [pname] => 3-(3,4-Dimethoxyphenyl)-L-alanine [catalogue_number] => PA 12 12550 [category_ids] => ,97,80, [chemical_name] => [weight] => 225.24 [form] => C11H15NO4 [cas] => 32161-30-1 [pslug] => 32161-30-1-3-3-4-dimethoxyphenyl-l-alanine-pa1212550 [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 12 12550
Molecular Formula : C11H15NO4
Molecular Weight : 225.24
stdClass Object ( [pname] => 3-Acetyl-L-tyrosine [catalogue_number] => PA 12 12560 [category_ids] => ,79,80,78,70,82, [chemical_name] => [weight] => 223.23 [form] => C11H13NO4 [cas] => 32483-30-0 [pslug] => 32483-30-0-3-acetyl-l-tyrosine-pa1212560 [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 12 12560
Molecular Formula : C11H13NO4
Molecular Weight : 223.23
stdClass Object ( [pname] => Levodopa - Impurity A [catalogue_number] => PA 12 12570 [category_ids] => ,97,80,93,78,70,82, [chemical_name] => [weight] => 213.19 [form] => C9H11NO5 [cas] => 27244-64-0 [pslug] => 27244-64-0-levodopa-impurity-a-pa1212570 [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 12 12570
Molecular Formula : C9H11NO5
Molecular Weight : 213.19
stdClass Object ( [pname] => rac 3-O-Methyl DOPA-d3 [catalogue_number] => PA STI 061290 [category_ids] => ,97,80,98, [chemical_name] => [weight] => 214.23 [form] => C10H10D3NO4 [cas] => 1219173-95-1 [pslug] => 1219173-95-1-rac-3-o-methyl-dopa-d3-pasti061290 [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 061290
Molecular Formula : C10H10D3NO4
Molecular Weight : 214.23
stdClass Object ( [pname] => 3-(Methoxy-d3)-L-tyrosine Hydrochloride [catalogue_number] => PA STI 061350 [category_ids] => ,97,80,98, [chemical_name] => [weight] => 250.69 [form] => C10H11D3ClNO4 [cas] => NA [pslug] => 3-methoxy-d3-l-tyrosine-hydrochloride-pasti061350 [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 061350
Molecular Formula : C10H11D3ClNO4
Molecular Weight : 250.69
stdClass Object ( [pname] => α,4-Dihydroxy-3-methoxy-α-methyl-benzeneethanesulfonic Acid Potassium Salt-d5 [catalogue_number] => PA STI 032860 [category_ids] => ,80,70,98, [chemical_name] => [weight] => 305.4 [form] => C10H8D5KO6S [cas] => 1794789-29-9 [pslug] => 1794789-29-9-alpha-4-dihydroxy-3-methoxy-alpha-methyl-benzeneethanesulfonic-acid-potassium-salt-d5-pasti032860 [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 032860
Molecular Formula : C10H8D5KO6S
Molecular Weight : 305.4
stdClass Object ( [pname] => N-[2-[4-(Acetyloxy)-3-methoxyphenyl]-1-cyano-1-methylethyl]acetamide [catalogue_number] => PA 12 12610 [category_ids] => ,79,80,81,78,70,82, [chemical_name] => [weight] => 290.31 [form] => C15H18N2O4 [cas] => 15073-74-2 [pslug] => 15073-74-2-n-2-4-acetyloxy-3-methoxyphenyl-1-cyano-1-methylethyl-acetamide-pa1212610 [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 12 12610
Molecular Formula : C15H18N2O4
Molecular Weight : 290.31
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