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CAS 475-38-7

CAS 475-38-7 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 475-38-7
CAS 475-38-7PubChem CID 10141

Naphthazarin

IUPAC name
5,8-dihydroxynaphthalene-1,4-dione
Molecular formula
C10H6O4
Molecular weight
190.15 g/mol
Exact mass
190.02660867 Da
XLogP3
1.8
Topological polar surface area
74.6 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

5,8-Dihydroxy-1,4-naphthoquinoneNaphthazarineNaphthazarone5,8-Dihydroxynaphthoquinone5,8-Dihydroxy-1,4-naphthalenedione5,8-Dihydroxy-1,4-naphthosemiquinoneS9IX5I5C0K1,4-NAPHTHOQUINONE, 5,8-DIHYDROXY-
16 more reported names
1,4-Naphthalenedione, 5,8-dihydroxy-CHEBI:28849NSC-26647NSC-3445555,8-dioxy-1,4-naphthoquinoneRefChem:831987207-495-4NAPHTHAZALIN5,8-Dihydroxy-[1,4]naphthoquinoneHY-N7526AS-76136CS-0132365doi:10.14272/RQNVIKXOOKXAJQ-UHFFFAOYSA-N.1DihydroxynaphthoquinoneNAPTHAZARIN NPHZ5,4-naphthosemiquinone
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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.

Records for CAS 475-38-7

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How CAS 475-38-7 is used on this site

CAS 475-38-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share 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 475-38-7 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.