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 B [catalogue_number] => PA 12 12020 [category_ids] => ,97,78,70,82, [chemical_name] => [weight] => 181.19 [form] => C9H11NO3 [cas] => 60-18-4 [pslug] => 60-18-4-levodopa-impurity-b-pa1212020 [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 12020
CAS :
Molecular Formula : C9H11NO3
Molecular Weight : 181.19
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] => 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-O-Methyl-L-DOPA-d3 Monohydrate [catalogue_number] => PA STI 061300 [category_ids] => ,97,98,93,78,70,82, [chemical_name] => [weight] => 232.25 [form] => C10H12D3NO5 [cas] => NA [pslug] => 3-o-methyl-l-dopa-d3-monohydrate-pasti061300 [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 061300
Molecular Formula : C10H12D3NO5
Molecular Weight : 232.25
stdClass Object ( [pname] => 3-O-Methyl-L-DOPA-d3 Methyl Ester [catalogue_number] => PA STI 061310 [category_ids] => ,97,98,93,78,70,82, [chemical_name] => [weight] => 228.26 [form] => C11H12D3NO4 [cas] => 1795785-77-1 [pslug] => 1795785-77-1-3-o-methyl-l-dopa-d3-methyl-ester-pasti061310 [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 061310
Molecular Formula : C11H12D3NO4
Molecular Weight : 228.26
stdClass Object ( [pname] => 3-O-Methyl-L-DOPA-d3 4-Glucuronide [catalogue_number] => PA STI 061320 [category_ids] => ,70,78,82,93,97,98,95, [chemical_name] => [weight] => 390.36 [form] => C16H18D3NO10 [cas] => NA [pslug] => 3-o-methyl-l-dopa-d3-4-glucuronide-pasti061320 [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 061320
Molecular Formula : C16H18D3NO10
Molecular Weight : 390.36
stdClass Object ( [pname] => 3-O-Methyl-L-DOPA 4-Sulfate [catalogue_number] => PA STI 061330 [category_ids] => ,97,98,93,78,70,82, [chemical_name] => [weight] => 291.28 [form] => C10H13NO7S [cas] => 1391393-86-4 [pslug] => 1391393-86-4-3-o-methyl-l-dopa-4-sulfate-pasti061330 [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 061330
Molecular Formula : C10H13NO7S
Molecular Weight : 291.28
stdClass Object ( [pname] => 3-O-Methyl-L-DOPA-d3 4-Sulfate [catalogue_number] => PA STI 061340 [category_ids] => ,97,98,93,78,70,82, [chemical_name] => [weight] => 294.30 [form] => C10H10D3NO7S [cas] => NA [pslug] => 3-o-methyl-l-dopa-d3-4-sulfate-pasti061340 [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 061340
Molecular Formula : C10H10D3NO7S
Molecular Weight : 294.30
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] => DL-DOPA-2,5,6-d6 [catalogue_number] => PA STI 036220 [category_ids] => ,70,78,82,93,97,98, [chemical_name] => [weight] => 203.22 [form] => C9H5D6NO4 [cas] => NA [pslug] => dl-dopa-2-5-6-d6-pasti036220 [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 036220
Molecular Formula : C9H5D6NO4
Molecular Weight : 203.22
stdClass Object ( [pname] => 3-Acetyl-N-benzyloxycarbonyl-L-tyrosine Methyl Ester [catalogue_number] => PA 12 12620 [category_ids] => ,97,93,78,70,82, [chemical_name] => [weight] => 371.38 [form] => C20H21NO6 [cas] => 110774-03-3 [pslug] => 110774-03-3-3-acetyl-n-benzyloxycarbonyl-l-tyrosine-methyl-ester-pa1212620 [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 12620
Molecular Formula : C20H21NO6
Molecular Weight : 371.38
stdClass Object ( [pname] => 3-Acetyl-N-benzyloxycarbonyl-4-O-benzyl-L-tyrosine Methyl Ester [catalogue_number] => PA 12 12630 [category_ids] => ,97,93,78,70,82, [chemical_name] => [weight] => 461.51 [form] => C27H27NO6 [cas] => 105205-69-4 [pslug] => 105205-69-4-3-acetyl-n-benzyloxycarbonyl-4-o-benzyl-l-tyrosine-methyl-ester-pa1212630 [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 12630
Molecular Formula : C27H27NO6
Molecular Weight : 461.51
stdClass Object ( [pname] => (Acetyl-d3)glycine-2,2-d2 [catalogue_number] => PA STI 088610 [category_ids] => ,97,75,76,78,70,82, [chemical_name] => [weight] => 122.13 [form] => C4H2D5NO3 [cas] => 1219805-82-9 [pslug] => 1219805-82-9-acetyl-d3-glycine-2-2-d2-pasti088610 [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 088610
Molecular Formula : C4H2D5NO3
Molecular Weight : 122.13
stdClass Object ( [pname] => 6-Hydroxy-DL-DOPA [catalogue_number] => PA 12 0121002 [category_ids] => ,97,93,69,70,78,82, [chemical_name] => [weight] => 213.19 [form] => C9H11NO5 [cas] => 21373-30-8 [pslug] => 21373-30-8-6-hydroxy-dl-dopa-pa120121002 [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 0121002
stdClass Object ( [pname] => L-Dopa methyl ester Hydrochloride [catalogue_number] => PA 12 0121003 [category_ids] => ,97,93,69,78,82, [chemical_name] => [weight] => 247.68 [form] => C10H14ClNO4 [cas] => 1421-65-4 [pslug] => 1421-65-4-l-dopa-methyl-ester-hydrochloride-pa120121003 [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 0121003
Molecular Formula : C10H14ClNO4
Molecular Weight : 247.68
stdClass Object ( [pname] => L-DOPA ethyl ester Hydrochloride [catalogue_number] => PA 12 0121004 [category_ids] => ,97,93,69,78,82, [chemical_name] => [weight] => 261.7 [form] => C11H16ClNO4 [cas] => 39740-30-2 [pslug] => 39740-30-2-l-dopa-ethyl-ester-hydrochloride-pa120121004 [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 0121004
Molecular Formula : C11H16ClNO4
Molecular Weight : 261.7
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