PHENYLALANINE
3-Phenyl-L-alanine
PHENYLALANINE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.
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.
Chemical identity and properties
Dl-Phenylalanine
Phenylalanine is an aromatic amino acid that is alanine in which one of the methyl hydrogens is substituted by a phenyl group. It has a role as a Daphnia magna metabolite. It is an alpha-amino acid and an aromatic amino acid. It contains a benzyl group. It is a conjugate base of a phenylalaninium. It is a conjugate acid of a phenylalaninate. — ChEBI
- IUPAC name
- 2-amino-3-phenylpropanoic acid
- Molecular formula
- C9H11NO2
- Molecular weight
- 165.19 g/mol
- Exact mass
- 165.078978594 Da
- XLogP3
- -1.5
- Topological polar surface area
- 63.3 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 3
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:28044
- ChEMBL:CHEMBL25080
- EPA DTXSID:DTXSID9023463
- PubMed:22814636
- PubMed:22719568
- PubMed:22523636
- PubMed:22497557
- PubMed:22319611
- PubMed:22001838
- PubMed:21754728
- PubMed:21590326
- PubMed:21587528
- PubMed:21577877
- PubMed:21561099
- PubMed:21539299
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
L-Phenylalanine
L-phenylalanine is the L-enantiomer of phenylalanine. It has a role as a micronutrient, a nutraceutical, an EC 3.1.3.1 (alkaline phosphatase) inhibitor, a mouse metabolite, a Saccharomyces cerevisiae metabolite, a plant metabolite, a human xenobiotic metabolite, an Escherichia coli metabolite and an algal metabolite. It is a L-alpha-amino acid, a phenylalanine, an erythrose 4-phosphate/phosphoenolpyruvate family amino acid and a proteinogenic amino acid. It is a conjugate base of a L-phenylalaninium. It is a conjugate acid of a L-phenylalaninate. It is an enantiomer of a D-phenylalanine. It is a tautomer of a L-phenylalanine zwitterion. — ChEBI
- IUPAC name
- (2S)-2-amino-3-phenylpropanoic acid
- Molecular formula
- C9H11NO2
- Molecular weight
- 165.19 g/mol
- Exact mass
- 165.078978594 Da
- XLogP3
- -1.5
- Topological polar surface area
- 63.3 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 3
- Covalent units
- 1
- Defined stereocentres
- 1
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:17295
- ChEMBL:CHEMBL301523
- EPA DTXSID:DTXSID4040763
- PubMed:39172838
- PubMed:38971454
- PubMed:29968805
- PubMed:26349500
- PubMed:24826842
- PubMed:23124343
- PubMed:23113336
- PubMed:23113183
- PubMed:23108620
- PubMed:23105881
- PubMed:23105706
- PubMed:23094070
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 PHENYLALANINE
INCI name
PHENYLALANINE
INN name
phenylalanine
Description
3-Phenyl-L-alanine
Record provenance
- Inventory reference
- 79702
- Imported identity
- PHENYLALANINE
- Source update
- 15/10/2010
Annex records for PHENYLALANINE
Key data
- 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.
Related inventory evidence
Ingredients with overlapping formulation functions
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
How PHENYLALANINE appears in the CosIng inventory
The CosIng inventory lists PHENYLALANINE 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.
PHENYLALANINE is also tagged with 3 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
Source note for PHENYLALANINE
This page reproduces the CosIng inventory entry for PHENYLALANINE 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 PHENYLALANINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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