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Official EU label nameGlossary entry 23834

QUASSIN

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.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
3

Resolved substance identity

CAS:76-78-875991-65-0
EC:200-985-9
Ingredient index records:
QUASSIN
Cosmetic functions: DENATURANT

(3aS,6aR,7aS,8S,11aS,11bS,11cS)-1,3a,4,5,6a,7,7a,8,11,11a,11b,11c-Dodecahydro-2,10-dimethoxy-3,8,11a,11c-tetramethyldibenzo[de,g]chromene-1,5,11-trione

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1 matched or reported name
QUASSIN

Regulatory evidence across markets

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

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 76-78-8
CAS 76-78-8PubChem CID 65571

(+)-Quassin

Quassin is a triterpenoid. — ChEBI

IUPAC name
(1S,2S,6S,7S,9R,13R,17S)-4,15-dimethoxy-2,6,14,17-tetramethyl-10-oxatetracyclo[7.7.1.02,7.013,17]heptadeca-4,14-diene-3,11,16-trione
Molecular formula
C22H28O6
Molecular weight
388.5 g/mol
Exact mass
388.18858861 Da
XLogP3
2.4
Topological polar surface area
78.9 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
7

Also known as

quassinQP1YAK6QGKNSC-36342Picrasa-2,12-diene-1,11,16-trione, 2,12-dimethoxy-(1S,2S,6S,7S,9R,13R,17S)-4,15-dimethoxy-2,6,14,17-tetramethyl-10-oxatetracyclo(7.7.1.02,7.013,17)heptadeca-4,14-diene-3,11,16-trioneRefChem:178048200-985-9Nigakilactone D
16 more reported names
QuassineQuassin (~90%)Quassin (>95%)Quassin (Mixture of Quassin, Isoquassin and Neoquassin)(3AS,6aR,7aS,8S,11aS,11bS,11cS)-1,3a,4,5,6a,7,7a,8,11,11a,11b,11c-dodecahydro-2,10-dimethoxy-3,8,11a,11c-tetramethyldibenzo(de,g)chromene-1,5,11-trioneSR-05000002312UNII-QP1YAK6QGKAnti-infectionQuassins(AS)EINECS 200-985-9Quassin (Standard)NSC 36342Quassin - 92%Quassin - 98%QUASSIN [MI]CHEBI:8692
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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.

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 assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS 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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