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InventoryRef 3880615/10/2010

TYROSINE

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

TYROSINE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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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 Ų
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
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 Ų
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
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 Ų
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
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Inventory details for TYROSINE

INCI name

TYROSINE

INN name

tyrosine

Ph. Eur. name

tyrosinum

Description

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

Record provenance

Inventory reference
38806
Imported identity
TYROSINE
Source update
15/10/2010
European Commission CosIng source notes
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Key data

CAS
556-02-5 / 556-03-6 / 60-18-4
EC
209-112-6 / 209-113-1 / 200-460-4
Restriction
—
Function
ANTISTATIC
Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
FRAGRANCE
Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.
HAIR CONDITIONING
Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
SKIN CONDITIONING
Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#29592 · TYROSINE

Ingredients with overlapping formulation functions

TRIPABA PANTHENOLANTISTATIC, HAIR CONDITIONING, UV ABSORBER
TRISODIUM LAUROAMPHO PG-ACETATE CHLORIDE PHOSPHATEANTISTATIC, CLEANSING, HAIR CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING, SURFA…
TRITELEIA IXIOIDES EXTRACTANTIOXIDANT, ANTISTATIC, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT
TRYPTOPHANANTISTATIC, FRAGRANCE, HAIR CONDITIONING
UNDECYLENAMIDE DEAANTI-SEBORRHEIC, ANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING, SURFACTANT - FOAM BOOSTING, VISCOSIT…
UNDECYLENAMIDE MEAANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING, V…
UNDECYLENAMIDOPROPYL BETAINEANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - F…
UNDECYLENAMIDOPROPYLTRIMONIUM METHOSULFATEANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How TYROSINE appears in the CosIng inventory

The CosIng inventory lists TYROSINE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

TYROSINE is also tagged with 4 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

TYROSINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, TYROSINE carries the following function designation(s):

CAS 556-02-5 / 556-03-6 / 60-18-4 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for TYROSINE

This page reproduces the CosIng inventory entry for TYROSINE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research TYROSINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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