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CAS 569-77-7

CAS 569-77-7 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 569-77-7
CAS 569-77-7PubChem CID 135403797

Purpurogallin

Purpurogallin is a cyclic ketone that is 5H-benzocycloheptene bearing an oxo group at position 5 and hydroxy groups at positions 2, 3, 4 and 6. It has a role as an antioxidant, an antibacterial agent, an EC 1.17.3.2 (xanthine oxidase) inhibitor and a protective agent. It is a tetrol, a member of phenols and a cyclic ketone. It derives from a hydride of a 5H-benzocycloheptene. — ChEBI

IUPAC name
2,3,4,6-tetrahydroxybenzo[7]annulen-5-one
Molecular formula
C11H8O5
Molecular weight
220.18 g/mol
Exact mass
220.03717335 Da
XLogP3
2.1
Topological polar surface area
98.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

2,3,4,6-tetrahydroxy-5H-benzo[7]annulen-5-oneCHEBI:86472,3,4,6-Tetrahydroxy-5H-benzocycloheptene-5-oneNSC-35676NSC-6466532,3,4,5-tetrahydroxybenzo[7]annulen-6-one2,3,4,5-tetrahydroxybenzo(7)annulen-6-one2,3,4,6-tetrahydroxybenzo(7)annulen-5-one
16 more reported names
2,3,4,6-tetrahydroxy-5H-benzo(7)annulen-5-oneRefChem:177322209-324-92,3,4,6-Tetrahydroxy-5H-benzocyclohepten-5-oneL3Z7U4N28PPurpurogalline5H-Benzocyclohepten-5-one, 2,3,4,6-tetrahydroxy-2,3,4,6-Tetrahydroxy-5H-benzo[a]cyclohepten-5-oneSR-01000759730Hit compound, 2Spectrum_000348SpecPlus_000311Spectrum2_000582Spectrum3_000692Spectrum4_001547Spectrum5_000114
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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 569-77-7

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How CAS 569-77-7 is used on this site

CAS 569-77-7 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 569-77-7 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.