Reference standards play a crucial role in the field of Anti-Parkinson's research and drug development. These standards, which include established criteria and guidelines, serve as benchmarks for evaluating the efficacy and safety of potential treatments. They provide a consistent framework for comparing the outcomes of different studies and ensuring that the results are reliable and reproducible. Reference standards also help researchers and clinicians in accurately diagnosing Parkinson's disease by providing clear diagnostic criteria and classification systems. By incorporating reference standards into Anti-Parkinson's research, scientists can effectively assess the effectiveness of interventions, develop new therapies, and ultimately improve the lives of individuals affected by Parkinson's disease.

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Acetylcysteine EP Impurity B CS-O-07118 Impurities
Acetylcysteine impurity C (A01... CS-EG-00020 EP Standards
Acetylcysteine Sodium CS-O-13147 Fine Chemicals
Amantadine Hydrochloride CS-O-11590 API Standards
Benserazide CS-O-14728 API Standards
Benserazide D3 Hydrochloride CS-O-10006 Stable Isotopes
Benserazide EP Impurity A CS-O-07348 Impurities
Benserazide EP Impurity B CS-O-07349 Impurities
Benserazide EP Impurity C CS-O-07350 Impurities
Benserazide Hydrochloride CS-O-11605 API Standards

Benserazide impurity A(Seconda... CS-ER-02449 Secondary Standards
Benserazide Trihydroxybenzylhy... CS-O-07352 Impurities
Benzatropine CS-L-00034 API Standards
Benzylamine CS-O-15277 Fine Chemicals
Biperiden CS-T-49156 API Standards
Biperiden Hydrochloride CS-T-49157 API Standards
Biperiden N-Oxide CS-P-00739 Metabolites
Bromocriptine CS-O-07419 API Standards
Bromocriptine-13CD3 CS-O-03556 Stable Isotopes
Cabergoline CS-O-06311 API Standards
Cabergoline D5 CS-O-06456 Stable Isotopes
Cabergoline EP Impurity A CS-O-31517 Impurities
Cabergoline EP Impurity B CS-T-52143 Impurities
Cabergoline EP Impurity C CS-O-16264 Impurities
Cabergoline EP Impurity D CS-O-13702 Impurities
Cabergoline Isomer CS-P-07572 Chiral
Cabergoline N-Oxide CS-P-03535 Metabolites
Cabergolinic acid methyl ester... CS-O-32715 Impurities
Carbetocin CS-O-01099 API Standards
Carbidopa CS-O-01054 API Standards
Carbidopa 13C D5 CS-O-15454 Stable Isotopes
Carbidopa D3 Hydrate CS-O-06462 Stable Isotopes
Carbidopa D5 CS-T-50253 Stable Isotopes
Carbidopa EP Impurity E CS-T-50258 Impurities
Carbidopa EP Impurity F CS-O-12052 Impurities
Carbidopa EP Impurity I (Racem... CS-T-49530 Impurities
Carbidopa EP Impurity J CS-T-49529 Impurities
Carbidopa Ethyl Ester Hydrochl... CS-P-07470 Impurities
Carbidopa for system suitabili... CS-EG-00261 EP Standards
Carbidopa impurity mixture (Y0... CS-EG-00262 EP Standards
Carbidopa monohydrate CS-M-34857 Impurities
Clonidine CS-T-13180 API Standards
Clonidine D4 Hydrochloride CS-O-11362 Stable Isotopes
Clonidine Hydrochloride CS-O-10960 API Standards
Clonidine Impurity 1 CS-P-07491 Impurities
Clonidine impurity B CS-T-47184 Impurities
Clonidine Related Compound B CS-P-03908 Impurities
Clonidine-d7 CS-P-02470 Stable Isotopes
Decarbonyl Ropinirole Dihydroc... CS-T-73317 Impurities
Denitro Tolcapone CS-T-15238 Impurities
Desoxo-2-ene Ropinirole CS-T-52304 Intermediates
DL-3-O-Methyldopa CS-O-10367 Metabolites
DL-Carbidopa CS-T-50252 Impurities
Entacapone CS-O-30903 API Standards
Entacapone D10 CS-O-06584 Stable Isotopes
Entacapone EP Impurity A CS-T-21646 Impurities
Entacapone EP Impurity D CS-P-07766 Impurities
Entacapone EP Impurity E CS-P-07767 Impurities
Entacapone EP Impurity F CS-P-07760 Impurities
Entacapone EP Impurity G CS-P-07761 Impurities
Entacapone EP Impurity H CS-P-07762 Impurities
Entacapone EP Impurity I CS-P-07763 Impurities
Entacapone-3-beta-D-Glucuronid... CS-P-07765 Glucuronides
Entacapone-d10 (cis) CS-AI-00188 Stable Isotopes
ent-Rotigotine CS-T-61197 Impurities
Gabapentin Desmethylated beta ... CS-O-32827 Impurities
Homogentisic Acid-13C6 CS-T-26356 Stable Isotopes
L,L-Dityrosine dihydrochloride CS-O-01808 Intermediates
Levodopa CS-O-01774 API Standards
Levodopa D3 CS-O-02700 Stable Isotopes
Levodopa Sulphate CS-O-30480 Metabolites
L-Tyrosine 13C9 15N CS-O-13938 Stable Isotope Reagent
L-Tyrosine-(Phenyl)-13C6 CS-CH-00185 Stable Isotope Reagent
L-Tyrosine-α,β,β,2,3,5,6 D7 CS-T-88178 Stable Isotopes
Memantine D6 Hydrochloride CS-O-06755 Stable Isotopes
Memantine Glycine CS-T-31758 Impurities
Memantine Hydrochloride CS-O-30638 API Standards
Memantine Hydrochloride (Secon... CS-ER-02912 Secondary Standards
Memantine hydrochloride 13C2 D... CS-O-02739 Stable Isotopes
Memantine Impurity D CS-J-00018 Impurities
Memantine Impurity E CS-O-31122 Impurities
Memantine lactose adduct CS-T-57472 Impurities
Memantine related compound B CS-O-05534 Impurities
N-(4-hydroxycyclohexyl)acetami... CS-O-31895 Intermediates
N-(4-Oxocyclohexyl) Phthalimid... CS-T-38256 Impurities
N(4-oxocyclohexyl)acetamide CS-O-31897 Intermediates
N-(Aminothioxomethyl)-5-oxo-1-... CS-T-48128 Impurities
N,N-Didemethylorphenadrine Hyd... CS-T-17922 Intermediates
N,N-Diethyl-2-Cyanoacetamide CS-O-14924 Intermediates
N,N-Dipropyl-2-methyl-3-nitrop... CS-O-32294 Intermediates
N,S-Diacetyl-L-cysteine CS-O-07120 Building Blocks
N-2-propene-1yl-2-chloro-R-ami... CS-O-15117 Impurities
N-2-Propynyl Rasagiline Hydroc... CS-T-60858 Impurities
N-Acetyl Memantine CS-T-00928 Impurities
N-Acetyl-3,4-dimethoxy-DL-phen... CS-O-33505 Impurities
N-Acetylcysteine amide CS-O-13145 Intermediates
N-Acetyl-DL-cysteine CS-O-13144 Intermediates
N-Acetyl-L-cysteine methyl est... CS-O-13146 Building Blocks
N-Desbispropyl-N-pentyl-2-meth... CS-T-16601 Impurities
N-Desmethyl Orphenadrine CS-O-16049 Metabolites
N-Desmethyl Selegiline D5 hydr... CS-O-03044 Stable Isotopes
N-Desmethyl Selegiline-D5 Hydr... CS-O-03339 Stable Isotopes
N-Despropyl Ropinirole CS-T-16602 Intermediates
N-Despropyl Ropinirole Hydroch... CS-T-16603 Metabolites
N-Despropyl Rotigotine Sulfate CS-T-52316 Intermediates
N-Hydroxy Ropinirole Hydrochlo... CS-T-56449 Impurities
N-Hydroxymethyl Ropinirole CS-T-27902 Impurities
N-Methoxy Ropinirole Hydrochlo... CS-T-32883 Impurities
N-t-Boc-1-adamantylamine CS-T-07360 Impurities
O,O-Dityrosine 13C12 CS-BE-00013 Stable Isotopes
Opicapone CS-T-59951 API Standards
Orphenadrine CS-P-00468 API Standards
Orphenadrine citrate CS-O-10184 API Standards
Orphenadrine citrate USP Impur... CS-EN-00075 Impurities
Orphenadrine citrate USP Impur... CS-EN-00076 Impurities
Orphenadrine D3 CS-O-11316 Stable Isotopes
Orphenadrine D3 Hydrochloride CS-O-10473 Stable Isotopes
Orphenadrine N-Oxide CS-T-38103 Impurities
Pergolide-D7 hydrochloride CS-BU-00064 Stable Isotopes
Piribedil CS-T-40167 API Standards
Piribedil D8 CS-O-06872 Stable Isotopes
Piribedil N-oxide CS-O-06126 Metabolites
Pramipexole CS-O-02206 API Standards
Pramipexole D5 CS-O-06876 Stable Isotopes
Pramipexole D5 Di Hydrochlorid... CS-O-16428 Stable Isotopes
Pramipexole D7 CS-O-16284 Stable Isotopes
Pramipexole Di Hydrochloride... CS-AQ-00053 Impurities
Pramipexole dihydrochloride CS-O-02156 API Standards
Pramipexole dihydrochloride mo... CS-O-02106 API Standards
Pramipexole EP Impurity A CS-O-31894 Impurities
Pramipexole EP Impurity E CS-T-03349 Impurities
Pramipexole Impurity 10 HCl CS-P-02442 Impurities
Pramipexole Impurity 19 CS-T-93315 Impurities
Pramipexole Impurity B CS-O-20056 Impurities
Pramipexole impurity C(Mixture... CS-O-14087 Impurities
Pramipexole impurity D CS-O-10996 Impurities
Pramipexole R-Isomer CS-O-05781 Chiral
Pramipexole-d3 CS-O-10451 Stable Isotopes
Procyclidine Hydrochloride CS-O-31008 API Standards
Propargyl Bezensulfonate CS-O-31855 Intermediates
Propylidine Ropinirole Hydroch... CS-T-40785 Impurities
rac-cis-7-Hydroxy Pramipexole CS-T-56367 Intermediates
rac-Rotigotine Hydrochloride CS-T-41974 API Standards
rac-trans-1-Deshydroxy Rasagil... CS-T-16118 Impurities
rac-trans-7-Hydroxy Pramipexol... CS-T-56368 Intermediates
Rasagiline CS-O-11733 API Standards
Rasagiline Mesylate CS-O-31019 API Standards
Rasagiline mesylate 13C3 CS-O-00753 Stable Isotopes
Rasagiline Mesylate Impurity B CS-T-02808 Impurities
Rasagiline Mesylate Impurity C CS-O-15118 Impurities
Rasagiline Mesylate Impurity D CS-O-15302 Impurities
Rasagiline Mesylate Impurity E CS-O-15278 Impurities
Rasagiline tartrate CS-O-16530 API Standards
Ropinirole Aminoacetic Acid CS-T-41935 Impurities
Ropinirole Aminoacetic Acid-d4... CS-T-85914 Stable Isotopes
Ropinirole Cyclopentanylindoli... CS-O-16812 Impurities
Ropinirole d3 CS-O-33786 Stable Isotopes
Ropinirole EP Impurity E CS-EO-00099 Impurities
Ropinirole EP Impurity H CS-EO-00100 Impurities
Ropinirole Hydrochloride CS-O-11740 API Standards
Ropinirole Hydrochloride D7 CS-O-06940 Stable Isotopes
Ropinirole methylene dimer CS-EO-00072 Impurities
Ropinirole N-Oxide CS-O-05946 Metabolites
Ropinirole Related Compound B CS-O-03611 Impurities
Rotigotine CS-O-02289 API Standards
Rotigotine D7 CS-O-11317 Stable Isotopes
Rotigotine D7 Hydrochloride CS-O-03341 Stable Isotopes
Rotigotine hydrochloride CS-T-61196 API Standards
Rotigotine Sulfate CS-T-61199 Impurities
Rotigotine-β-D-Glucuronid... CS-T-61198 Glucuronides
S-(+)-Deprenyl Hydrochloride CS-T-52073 Impurities
Selegiline CS-O-02353 API Standards
Selegiline D5 Hydrochloride CS-O-06957 Stable Isotopes
Selegiline Hydrochloride CS-O-05223 API Standards
Tofenacin Hydrochloride Salt CS-T-44511 API Standards
Tolcapone CS-O-11760 API Standards
Tolcapone D4 CS-O-07014 Stable Isotopes
Tolcapone-D7 CS-CX-00593 Stable Isotopes
Tolcapone-β-D-Glucuronide CS-O-30506 Glucuronides
Trihexyphenidyl Hydrochloride CS-O-05406 API Standards
"(±)-2,6-Diamino-4, 5, 6, 7-te... CS-T-17038 Intermediates
"2,3,4-Tribenzyloxybenzaldehyd... CS-T-86579 Impurities
"2,6-Dichloro-3,5-Dimethoxyani... CS-O-10788 Intermediates
"2,6-Dichloroformanilide" CS-T-89160 Impurities
"2-Methyl-3-nitrophenylethyl-N... CS-CO-00007 Intermediates
"2-Nitro-6-[2-(N,N-di-n-propyl... CS-CO-00006 Intermediates
(+/-)-Pramipexole CS-T-60706 Impurities
(±)-2,6-Diamino-4,5,6,7-tetrah... CS-O-32258 Intermediates
(6S)-5,6,7,8-Tetrahydro-6-(pro... CS-T-61879 Intermediates
(8S)-2-Bromo-α-Ergocryptine CS-T-49670 Impurities
(8ß)-N-[3-(Methylamino)propyl]... CS-T-81496 Impurities
(E)-3-O-Methyl Entacapone CS-T-32362 Impurities
(E/Z)-3-O-Methyl Entacapone CS-T-32363 Impurities
(R)-Carbidopa CS-O-11281 Chiral
(R)-N-Desmethyl Selegiline Hyd... CS-P-00235 Impurities
(R)-N-Despropyl Pramipexole CS-O-31898 Intermediates
(R)-Rotigotine Hydrochloride CS-A-00004 Intermediates
(R,R)-trans-1-Deshydroxy Rasag... CS-T-16120 Impurities
(S)-(-)-Carbidopa D3 CS-O-20028 Stable Isotopes
(S)-(-)-Carbidopa D3 H2O CS-O-02756 Stable Isotopes
(S)-(+)-1-Aminoindane Hydrochl... CS-O-10646 Intermediates
(S)-5,6,7,8-Tetrahydro-6-(prop... CS-T-61880 Intermediates
(S)-Pramipexole-d7 Dihydrochlo... CS-C-00442 Stable Isotopes
(S)-Rasagiline CS-O-15120 Impurities
(S)-Rasagiline Mesylate CS-T-41548 Chiral
1,3,5-Tribromoadamantane CS-T-44923 Impurities
1-Adamantylamine CS-O-00927 Impurities
1-Amino-7-hydroxy-3,5-dimethyl... CS-T-02718 Impurities
1-Aminoindan CS-O-31854 Intermediates
1-Aminoindan Hydrochloride CS-O-31856 Fine Chemicals
1-Bromo-3-methyladamantane CS-T-08452 Intermediates
1-chloroindan CS-O-31852 Fine Chemicals
1-Cyanocyclohexaneacetic acid CS-T-25001 Fine Chemicals
2-(4-(aminomethyl)cyclohexyl)a... CS-O-15121 Intermediates
2,2-methylenebis(2-azaspiro[4.... CS-O-33697 Impurities
2,3,4-Trihydroxybenzylhydrazin... CS-T-45441 Intermediates
2-[2-(Dipropylamino)ethyl]-6-n... CS-T-21022 Intermediates
2-Bromo (S)-Carbidopa CS-T-67232 Impurities
2-ISOBUTYRYL-2-AZASPIRO(4,5)DE... CS-O-33182 Impurities
2-methyl-3-nitro benzyl cyanid... CS-O-31722 Impurities
2-methyl-3-nitro phenyl acetic... CS-O-32295 Intermediates
2-Methylbenzhydrol CS-T-33239 Fine Chemicals
3-(3-hydroxyphenyl)-2-methylla... CS-O-14217 Metabolites
3-(3-hydroxyphenyl)-2-methylpr... CS-O-14216 Metabolites
3-(4-Hydroxy-3-methoxyphenyl)-... CS-O-14215 Metabolites
3,4-Dihydroxy-5-nitro benzalde... CS-O-31468 Intermediates
3,4-Dimethoxyphenylalanine CS-O-33506 Intermediates
3-Ethyl 3,5-Didemethyl Memanti... CS-T-22694 Impurities
3-morpholine-4-chloro-1,2,5-th... CS-O-31724 Intermediates
3-O-Methyl Carbidopa CS-T-58059 Impurities
3-O-Methyl Tolcapone CS-O-10336 Metabolites
3-O-Methyl Tolcapone D4 CS-O-03164 Stable Isotopes
3-O-Methyldopa d3 (Methoxy-d3) CS-O-02682 Stable Isotopes
3-O-Methyl-L-DOPA Monohydrate CS-T-33695 Impurities
4-(2-Hydroxyethyl)-1,3-dihydro... CS-T-27333 Intermediates
4-Hydroxy Clonidine CS-A-00010 Metabolites
4-Hydroxy Clonidine D4 CS-T-55891 Stable Isotopes
4-Hydroxy Clonidine Hydrochlor... CS-T-26993 Intermediates
4-Methoxy Clonidine CS-T-32307 Impurities
5-Methoxy-2-tetralone CS-T-32894 Impurities
7-Methyl Memantine Hydrochlori... CS-T-34422 Impurities
8S-Cabergoline CS-T-50184 API Standards
9,10-Didehydro Cabergoline CS-T-52715 Impurities
α-Methyl-3,4-dihydroxyphenylpr... CS-T-58117 Intermediates