Official EU label nameGlossary entry 29592

TYROSINE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:556-02-5556-03-660-18-4

EC:209-112-6209-113-1200-460-4

Ingredient index records:

TYROSINE

Ph. Eur. name: tyrosinum

Cosmetic functions: ANTISTATIC, FRAGRANCE, HAIR CONDITIONING, SKIN CONDITIONING

2-Amino-3-(4-hydroxyphenyl)propanoic acid

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3 matched or reported names

TYROSINEtyrosinetyrosinum

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name TYROSINE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 556-02-5

CAS 556-02-5PubChem CID 71098

D-Tyrosine

D-tyrosine is an optically active form of tyrosine having D-configuration. It has a role as an Escherichia coli metabolite. It is a D-alpha-amino acid and a tyrosine. It is a conjugate base of a D-tyrosinium. It is a conjugate acid of a D-tyrosinate(1-). It is an enantiomer of a L-tyrosine. It is a tautomer of a D-tyrosine zwitterion. — ChEBI

IUPAC name: (2R)-2-amino-3-(4-hydroxyphenyl)propanoic acid

Molecular formula: C9H11NO3
Molecular weight: 181.19 g/mol
Exact mass: 181.07389321 Da
XLogP3: -2.3
Topological polar surface area: 83.6 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 1

Also known as

D-TyrD-Tyrosin(R)-TYROSINEWQ5G9JQ7GCCHEBI:28479(R)-3-(p-Hydroxyphenyl)alanineEINECS 209-112-6D-4-HYDROXYPHENYLALANINE

16 more reported names

(R)-2-Amino-3-(p-hydroxyphenyl)propionic acid2-amino-3-(4-hydroxyphenyl)-propanoic acidRefChem:585118(2R)-2-azaniumyl-3-(4-hydroxyphenyl)propanoate209-112-6H-D-Tyr-OH(R)-2-amino-3-(4-hydroxyphenyl)propanoic acidTyrosine, d-3-(4-Hydroxyphenyl)-D-alanineDTYD-(+)-Tyrosined-p-TyrosineDTyr(D)-TyrosineUNII-WQ5G9JQ7GCCS-D1377

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External database identifiers

ChEBI:CHEBI:28479
ChEMBL:CHEMBL1076637
EPA DTXSID:DTXSID50883441
PubMed:15292242

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

PubChem 2D chemical structure for CAS 556-03-6

CAS 556-03-6PubChem CID 1153

DL-Tyrosine

Tyrosine is an alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring. It has a role as a Daphnia magna metabolite. It is a polar amino acid, an alpha-amino acid and an aromatic amino acid. It contains a 4-hydroxybenzyl group. It is functionally related to a propionic acid. It is a conjugate base of a tyrosinium. It is a conjugate acid of a tyrosinate(1-). — ChEBI

IUPAC name: 2-amino-3-(4-hydroxyphenyl)propanoic acid

Molecular formula: C9H11NO3
Molecular weight: 181.19 g/mol
Exact mass: 181.07389321 Da
XLogP3: -2.3
Topological polar surface area: 83.6 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 0

Also known as

Tyrosine, DL-A9BAT9B32MNSC 205006EINECS 209-113-1NSC-205006AI3-18479RefChem:5899852-azaniumyl-3-(4-hydroxyphenyl)propanoate

16 more reported names

209-113-1H-DL-Tyr-OH(.+-.)-TyrosineDL-TYROSINE-BETA-13CDL-4-Hydroxyphenylalanine-15NL-TryosinetyrosinBenzenepropanoic acid, (S)-2-Amino-3-(4-hydroxyphenyl)-propanoicaci(+-)-TyrosinetyrUNII-A9BAT9B32Mdl-p-tyrosineDL-TyrozineTyrosine #(2s)-tyrosine

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External database identifiers

ChEBI:CHEBI:18186
ChEMBL:CHEMBL108615
EPA DTXSID:DTXSID50859040
PubMed:22523636
PubMed:22019765
PubMed:21754794
PubMed:21590326
PubMed:21581884
PubMed:21322554
PubMed:21298016
PubMed:21251827
PubMed:21202449
PubMed:21202043
PubMed:20172105
PubMed:20140223

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

PubChem 2D chemical structure for CAS 60-18-4

CAS 60-18-4PubChem CID 6057

L-Tyrosine

L-tyrosine is an optically active form of tyrosine having L-configuration. It has a role as a micronutrient, a nutraceutical, an EC 1.3.1.43 (arogenate dehydrogenase) inhibitor and a fundamental metabolite. It is a L-alpha-amino acid, a tyrosine, an erythrose 4-phosphate/phosphoenolpyruvate family amino acid and a proteinogenic amino acid. It is functionally related to a L-tyrosinal. It is a conjugate base of a L-tyrosinium. It is a conjugate acid of a L-tyrosinate(1-). It is an enantiomer of a D-tyrosine. It is a tautomer of a L-tyrosine zwitterion. — ChEBI

IUPAC name: (2S)-2-amino-3-(4-hydroxyphenyl)propanoic acid

Molecular formula: C9H11NO3
Molecular weight: 181.19 g/mol
Exact mass: 181.07389321 Da
XLogP3: -2.3
Topological polar surface area: 83.6 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 1

Also known as

tyrosine(S)-Tyrosinep-TyrosineL-p-Tyrosine4-Hydroxy-L-phenylalaninetirosinaTyrosinumL-Phenylalanine, 4-hydroxy-

16 more reported names

beta-(p-Hydroxyphenyl)alanine(-)-alpha-Amino-p-hydroxyhydrocinnamic acidFEMA No. 3736(S)-alpha-Amino-4-hydroxybenzenepropanoic acid(S)-(-)-Tyrosine(S)-3-(p-Hydroxyphenyl)alanineL-TyrosinL-Tyr(S)-2-Amino-3-(p-hydroxyphenyl)propionic acid2-Amino-3-(4-hydroxyphenyl)propanoic acid, (S)-3-(p-Hydroxyphenyl)alanineNSC-8262442HK56048UCHEBI:178952-Amino-3-(p-hydroxyphenyl)propionic acidpara-tyrosine

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External database identifiers

ChEBI:CHEBI:17895
ChEMBL:CHEMBL925
EPA DTXSID:DTXSID1023730
PubMed:39172838
PubMed:29968805
PubMed:23602810
PubMed:23125543
PubMed:23123718
PubMed:23122502
PubMed:23122394
PubMed:23122377
PubMed:23122138
PubMed:23118806
PubMed:23118544
PubMed:23118540

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

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Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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