CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 1 record

CAS 3902-71-4

CAS 3902-71-4 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 3902-71-4
CAS 3902-71-4PubChem CID 5585

Trimethylpsoralen

IUPAC name
2,5,9-trimethylfuro[3,2-g]chromen-7-one
Molecular formula
C14H12O3
Molecular weight
228.24 g/mol
Exact mass
228.078644241 Da
XLogP3
3.0
Topological polar surface area
39.4 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

trioxsalenTrioxysalen4,5',8-TrimethylpsoralenTrioxisalenoTrioxysalene2',4,8-TrimethylpsoralenTrioxysalenumTmp (psoralen)
16 more reported names
NSC 710477H-Furo[3,2-g][1]benzopyran-7-one, 2,5,9-trimethyl-Y6UY8OV51T2,5,9-Trimethyl-7H-furo(3,2-g)(1)benzopyran-7-one7H-Furo(3,2-g)(1)benzopyran-7-one, 2,5,9-trimethyl-2,5,9-Trimethyl-7H-furo[3,2-g][1]benzopyran-7-oneCHEBI:283296-hydroxy-beta,2,7-trimethyl-5-benzofuranacrylic acid, delta-lactoneTrioxisalenum2,5,9-trimethylfuro(3,2-g)chromen-7-one4,7,9-trimethyl-2H-furo(3,2-g)chromen-2-one4,7,9-trimethyl-2H-furo[3,2-g]chromen-2-onetrioxisaleneRefChem:581762,5,9-Trimethyl-7H-furo(3,2-g)benzopyran-7-oneD05AD01
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.

Records for CAS 3902-71-4

1 total
No records found for this CAS number.

How CAS 3902-71-4 is used on this site

CAS 3902-71-4 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 3902-71-4 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.