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Amino acids and derivatives

DL-Dopa

Also known as 2-Amino-3-(3,4-dihydroxyphenyl)propanoic acid, dihydroxyphenylalanine, DL-Dioxyphenylalanine

CAS 63-84-3Formula C9H11NO4Molar mass 197.19 g/molEC 200-566-0
GHS signal word: Warning. Pictograms: Harmful or irritant 88 suppliers listed
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DL-Dopa chemical structure, C9H11NO4, CAS 63-84-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
63-84-3
Formula
C9H11NO4
Molar mass
197.19 g/mol
EC number
200-566-0
HS code
292250
Category
Amino acids and derivatives

What is DL-Dopa?

Plain description, key identifiers and synonyms

Dopa is a hydroxyphenylalanine carrying hydroxy substituents at positions 3 and 4 of the benzene ring. It has a role as a human metabolite. It is a hydroxyphenylalanine, a tyrosine derivative and a non-proteinogenic alpha-amino acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-amino-3-(3,4-dihydroxyphenyl)propanoic acid
CAS number
63-84-3 CAS number cross-checkedOther or deprecated CAS: 5796-17-8
EC number
200-566-0
Molecular formula
C9H11NO4
UNII
QI9C343R60
MDL number
MFCD00063060
InChIKey
WTDRDQBEARUVNC-UHFFFAOYSA-N
InChI
InChI=1S/C9H11NO4/c10-6(9(13)14)3-5-1-2-7(11)8(12)4-5/h1-2,4,6,11-12H,3,10H2,(H,13,14)
SMILES (canonical and isomeric)
C1=CC(=C(C=C1CC(C(=O)O)N)O)O

Synonyms

  • 2-Amino-3-(3,4-dihydroxyphenyl)propanoic acid
  • dihydroxyphenylalanine
  • DL-Dioxyphenylalanine
  • 3-Hydroxy-DL-tyrosine
  • DL-3,4-Dopa
  • (+-)-Dopa
  • DL-beta-(3,4-Dihydroxyphenyl)alanine
  • (+-)-3-(3,4-Dihydroxyphenyl)alanine
  • DOPA, DL-
  • Alanine, 3-(3,4-dihydroxyphenyl)-, dl-
  • 3 Hydroxy DL tyrosine
  • beta Hydroxytyrosine
  • 3,4 Dihydroxyphenylalanine
  • 2-azaniumyl-3-(3,4-dihydroxyphenyl)propanoate
  • Dihydroxyphenylalanine,(+-)-3-(3,4-Dihydroxyphenyl)alanine,DL-3,4-Dopa,(+-)-Dopa
  • 3,4-Dihydroxy-DL-phenylalanine
  • 3-(3,4-Dihydroxyphenyl)-DL-alanine
  • 3-Hydroxytyrosine
  • DL-Dihydroxyphenylalanine
  • DL-Tyrosine, 3-hydroxy-
  • (R,S)-Dopa
  • 3',4'-Dihydroxyphenylalanine
  • dl-3,4-Dihydroxyphenylalanine
  • 3-(3,4-Dihydroxyphenyl)-D-alanine
  • D-Tyrosine, 3-hydroxy-
Show all 35 synonyms
  • DL-3-Hydroxytyrosine
  • 2-amino-3-(3,4-dihydroxy-phenyl)-propionic acid
  • D-3-Hydroxytyrosine
  • DL -Dopa
  • Tyrosine, 3-hydroxy-
  • DOPA DL-FORM
  • alpha-amino-Hydrocaffeic acid
  • (.+-.)-Dopa
  • 3,4-Dihydroxyphenylalanine #
  • DL-4,5-Dihydroxyphenylalanine

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
197.19 g/molcalc.
Exact mass
197.0688 Dacalc.
LogP (octanol/water)
0.05calc.
Topological polar surface area
103.8 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.22calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

DL-Dopa suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 88 suppliers
30 of 30 offers
  • Oxford Lab Chem
    India, Navi Mumbai ManufacturerUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • 001Chemical
    China, HangzhouUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • 10X Chem
    United States, San DiegoUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • 3WAY Pharm Inc
    China, ShanghaiUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • A2B Chem LLC
    United States, San DiegoUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • Aa Blocks LLC
    United States, San DiegoUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • Aaron Chemicals LLC.
    China, NanjingUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • AbaChemScene, LLC
    United States, Monmouth JunctionUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • ABCR GmbH & CO. KG
    GermanyUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
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  • Abmole Bioscience Inc.
    United States, HoustonUnclaimed profile
    DL-DopaGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

88 suppliers in 16 countries

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DL-Dopa price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Dopamine Agents

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite

Pharmacology

Dopa, DL- is the racemic mixture of the precursor of dopamine L-DOPA (levodopa) and D-DOPA, with antiparkinsonian properties. L-DOPA is converted to dopamine by DOPA decarboxylase and can cross the blood-brain barrier (BBB). When in the brain, levodopa is decarboxylated to dopamine and stimulates the dopaminergic receptors, thereby compensating for the depleted supply of endogenous dopamine seen in Parkinson's disease.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code DL-Dopa is traded under.

HS 2922.50Indicative HS code

Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function

World exports in 2024
$3.29B
−5.9% vs 2023, imports $3.19B
2019 to 2024
Top exporters
  1. China39.2%
  2. United Kingdom27.1%
  3. India * partner reported4.8%
Top importers
  1. United States20.7%
  2. Germany7.6%
  3. Italy6.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for DL-Dopa is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about DL-Dopa, based on the data on this page

What is DL-Dopa?

Dopa is a hydroxyphenylalanine carrying hydroxy substituents at positions 3 and 4 of the benzene ring. It has a role as a human metabolite. It is a hydroxyphenylalanine, a tyrosine derivative and a non-proteinogenic alpha-amino acid.

What is the CAS number of DL-Dopa?

The CAS registry number of DL-Dopa is 63-84-3. Other or deprecated CAS numbers: 5796-17-8.

What is the molecular formula and weight of DL-Dopa?

The molecular formula of DL-Dopa is C9H11NO4 and its molar mass is 197.19 g/mol.

What is DL-Dopa used for?

Known uses and roles of DL-Dopa include animal metabolite, eukaryotic metabolite, human metabolite, mammalian metabolite, metabolite and 1 more.

Is DL-Dopa hazardous?

DL-Dopa carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of DL-Dopa?

DL-Dopa is usually classified under HS code 292250 (Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function). This is indicative, confirm it with your customs broker before shipping.

Where can I buy DL-Dopa?

CompoundList lists 88 suppliers of DL-Dopa in United States, China, United Kingdom, Germany and 12 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy DL-Dopa in India?

1 supplier in India list DL-Dopa on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of DL-Dopa?

Suppliers quote DL-Dopa on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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