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CAS 298-81-7

CAS 298-81-7 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 298-81-7
CAS 298-81-7PubChem CID 4114

8-Methoxypsoralen

Methoxsalen is a member of the class of psoralens that is 7H-furo[3,2-g]chromen-7-one in which the 9 position is substituted by a methoxy group. It is a constituent of the fruits of Ammi majus. Like other psoralens, trioxsalen causes photosensitization of the skin. It is administered topically or orally in conjunction with UV-A for phototherapy treatment of vitiligo and severe psoriasis. It has a role as an antineoplastic agent, a photosensitizing agent, a dermatologic drug, a cross-linking reagent and a plant metabolite. It is a member of psoralens and an aromatic ether. It is functionally related to a psoralen. — ChEBI

IUPAC name
9-methoxyfuro[3,2-g]chromen-7-one
Molecular formula
C12H8O4
Molecular weight
216.19 g/mol
Exact mass
216.04225873 Da
XLogP3
1.9
Topological polar surface area
48.7 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

methoxsalenXANTHOTOXIN8-MOPOxsoralen9-Methoxy-7H-furo[3,2-g]chromen-7-oneMeladinineOxypsoralenMeloxine
16 more reported names
PuvalenXanthotoxineAmmoidinMeladininMeladoxenAmmodinUvadex8-MethoxypsoraleneGeroxalenNew-MeladininZanthotoxinPuvametPsoralon-MOP9-MethoxypsoralenOxsoralen Ultra8-Methoxyfuranocoumarin
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External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 298-81-7

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How CAS 298-81-7 is used on this site

CAS 298-81-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 298-81-7 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.