Official EU label nameGlossary entry 23378

PROTOCATECHUICALDEHYDE

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:139-85-5

EC:205-377-7

Ingredient index records:

PROTOCATECHUICALDEHYDE

Cosmetic functions: ANTIOXIDANT, BLEACHING, SKIN CONDITIONING

3,4-Ddihydroxybenzaldehyde

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1 matched or reported name

PROTOCATECHUICALDEHYDE

Regulatory evidence across markets

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

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 139-85-5

CAS 139-85-5PubChem CID 8768

3,4-Dihydroxybenzaldehyde

3,4-dihydroxybenzaldehyde is a dihydroxybenzaldehyde. — ChEBI

IUPAC name: 3,4-dihydroxybenzaldehyde

Molecular formula: C7H6O3
Molecular weight: 138.12 g/mol
Exact mass: 138.031694049 Da
XLogP3: 1.3
Topological polar surface area: 57.5 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

ProtocatechualdehydePROTOCATECHUIC ALDEHYDERancinamycin IV4-Formyl-1,2-dihydroxybenzene3,4-Dihydroxybenzenecarbonal4PVP2HCH4TCHEBI:50205NSC-22961

16 more reported names

GM-W03RefChem:45419O HUI WHITE EXTREME CELLIGHT205-377-7Benzaldehyde, 3,4-dihydroxy-catechaldehyde3,4-dihydroxy-benzaldehyde4-Formyl-1,2-benzenediol1,2-Dihydroxy-4-formylbenzene3,4-dihydroxy benzaldehydeprotocatechuicaldehydeTadalafil Impurity 5UNII-4PVP2HCH4TNSC 229614,5-Dihydroxybenzaldehyde3,4-DHBAOP

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External database identifiers

ChEBI:CHEBI:50205
ChEMBL:CHEMBL222021
EPA DTXSID:DTXSID4074512
PubMed:40228705
PubMed:29732668
PubMed:29665407
PubMed:25582705
PubMed:24712725
PubMed:23159608
PubMed:23019903
PubMed:23019884
PubMed:22885041
PubMed:22861150
PubMed:22792795
PubMed:22779179

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

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

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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