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Official EU label nameGlossary entry 14867

LAPACHONE

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
1

Resolved substance identity

CAS:4707-32-8
Ingredient index records:
LAPACHONE

2H-Naphthol[1,2-b]pyan-5,6-dione, 3,4-dihydro-2,2-dimethyl-

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1 matched or reported name
LAPACHONE

Regulatory evidence across markets

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

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 4707-32-8
CAS 4707-32-8PubChem CID 3885

Beta-Lapachone

Beta-lapachone is a benzochromenone that is 3,4-dihydro-2H-benzo[h]chromene-5,6-dione substituted by geminal methyl groups at position 2. Isolated from Tabebuia avellanedae, it exhibits antineoplastic and anti-inflammatory activities. It has a role as an antineoplastic agent, an anti-inflammatory agent and a plant metabolite. It is a member of orthoquinones and a benzochromenone. — ChEBI

IUPAC name
2,2-dimethyl-3,4-dihydrobenzo[h]chromene-5,6-dione
Molecular formula
C15H14O3
Molecular weight
242.27 g/mol
Exact mass
242.094294304 Da
XLogP3
2.2
Topological polar surface area
43.4 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

lapachoneLapachone, beta-3,4-Dihydro-2,2-dimethyl-2H-naphtho[1,2-B]pyran-5,6-dioneARQ 501Beta-lap-wjARQ-5013,4-Dihydro-2,2-dimethyl-2H-naphtho(1,2-b)pyran-5,6-dione6N4FA2QQ6A
16 more reported names
NSC-26326Beta lapachoneNSC-6297492H-Naphtho[1,2-b]pyran-5,6-dione, 3,4-dihydro-2,2-dimethyl-2H-Naphtho(1,2-b)pyran-5,6-dione, 3,4-dihydro-2,2-dimethyl-ARQ501CHEBI:104292,2-dimethyl-3,4-dihydrobenzo(h)chromene-5,6-dioneRefChem:5678932,2-Dimethyl-3,4-dihydro-2H-benzo[h]chromene-5,6-dione.beta.-LapachoneNSC 26326SL 11001UNII-6N4FA2QQ6AARQ-501 (beta lapachone)NSC 629749
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.

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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