Is QUERCETAGETIN safe to use in EU cosmetics?

QUERCETAGETIN is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What does the restriction note for QUERCETAGETIN mean?

The restriction field for QUERCETAGETIN reads: Suspected carcinogen based on ECHA. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 90-18-6?

CAS 90-18-6 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains QUERCETAGETIN?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 9612630/04/2018

QUERCETAGETIN

2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxychromen-4-one,4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxy-,6-Hydroxyquercetin 3,3',4',5,6,7-Hexahydroxyflavone

QUERCETAGETIN is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet. Inventory note: Suspected carcinogen based on ECHA.

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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 90-18-6

CAS 90-18-6PubChem CID 5281680

Quercetagetin

Quercetagetin is a hexahydroxyflavone that is flavone substituted by hydroxy groups at positions 3, 5, 6, 7, 3' and 4' respectively. It has a role as an antioxidant, an antiviral agent and a plant metabolite. It is a hexahydroxyflavone and a member of flavonols. It is functionally related to a quercetin. — ChEBI

IUPAC name: 2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxychromen-4-one

Molecular formula: C15H10O8
Molecular weight: 318.23 g/mol
Exact mass: 318.03756727 Da
XLogP3: 1.2
Topological polar surface area: 148.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 8
Covalent units: 1
Defined stereocentres: 0

Also known as

6-Hydroxyquercetin3,3',4',5,6,7-HexahydroxyflavoneSV68G507VOCHEBI:86954H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxy-NSC-1159163,5,6,7-Tetrahydroxy-2-(3,4-dihydroxyphenyl)-4H-1-benzopyran-4-oneQuercetogetin

16 more reported names

RefChem:47609201-973-6Quercetagenin2-(3,4-Dihydroxyphenyl)-3,5,6,7-tetrahydroxy-4H-chromen-4-one3,5,6,7,3',4'-Hexahydroxyflavone2-(3,4-Dihydroxyphenyl)-3,5,6,7-tetrahydroxy-4H-1-benzopyran-4-one2-(3,4-Dihydroxyphenyl)-3,5,6,7-tetrahydroxy-4-benzopyrone3,3'4,5,6,7-hexOH-FlavoneFlavone, 3,3',4',5,6,7-hexahydroxy-2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxy-chromen-4-one3,5,6,7-Tetrahydroxy-2-(3,4-Dihydroxyphenyl)-4h-Chromen-4-OneMYUUNII-SV68G507VOEINECS 201-973-6NSC 1159163v3v

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:8695
ChEMBL:CHEMBL413552
EPA DTXSID:DTXSID80237978
PubMed:25299849
PubMed:23349632
PubMed:22840454
PubMed:22594840
PubMed:22536197
PubMed:22506638
PubMed:22228937
PubMed:22223143
PubMed:22096324
PubMed:21527031
PubMed:21480273
PubMed:21187157

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 QUERCETAGETIN

INCI name

QUERCETAGETIN

Description

2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxychromen-4-one,4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,6,7-tetrahydroxy-,6-Hydroxyquercetin 3,3',4',5,6,7-Hexahydroxyflavone

Record provenance

Inventory reference: 96126
Imported identity: QUERCETAGETIN
Source update: 30/04/2018

European Commission CosIng source notes

Annex records for QUERCETAGETIN

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Key data

CAS

90-18-6

201-973-6

Restriction

Suspected carcinogen based on ECHA

Function

SKIN PROTECTING: Helping to avoid harmful effects to the skin from external factors.

Official EU ingredient-name evidence

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

#23895 · QUERCETAGETIN

Ingredients with overlapping formulation functions

PYROGLUTAMYLAMIDOETHYL INDOLESKIN PROTECTING

PYRROLOQUINOLINE QUINONEANTIOXIDANT, HUMECTANT, SKIN CONDITIONING, SKIN PROTECTING

PYRUS COMMUNIS FRUIT EXTRACTSKIN CONDITIONING, SKIN PROTECTING

PYRUS SEROTINA CALLUS EXTRACTANTI-SEBUM, ANTIOXIDANT, HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING, SKIN CONDITIONING - EMOLL…

QUERCETIN DIMETHYL ETHER GLUCOSIDESKIN CONDITIONING, SKIN PROTECTING

QUERCUS ACUTA SEEDCOAT EXTRACTANTIMICROBIAL; ANTIOXIDANT; SKIN PROTECTING; SKIN CONDITIONING - MISCELLANEOUS

QUERCUS ACUTISSIMA SAPANTI-SEBUM, SKIN CONDITIONING, SKIN PROTECTING

QUERCUS GLAUCA SEEDCOAT EXTRACTANTIMICROBIAL; ANTIOXIDANT; SKIN PROTECTING; SKIN CONDITIONING - MISCELLANEOUS

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 chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How QUERCETAGETIN appears in the CosIng inventory

The CosIng inventory lists QUERCETAGETIN 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.

QUERCETAGETIN is also tagged with 1 cosmetic function 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

QUERCETAGETIN 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.

The restriction field for QUERCETAGETIN reads: "Suspected carcinogen based on ECHA". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

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

SKIN PROTECTING

CAS 90-18-6 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 QUERCETAGETIN

This page reproduces the CosIng inventory entry for QUERCETAGETIN 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 QUERCETAGETIN 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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