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CAS 4991-65-5

CAS 4991-65-5 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 4991-65-5
CAS 4991-65-5PubChem CID 72139

6-Hydroxy-1,3-benzoxathiol-2-one

Tioxolone is a 1,3-benzoxathiole having a hydroxy substituent at the 6-position. It has a role as an antiseborrheic. — ChEBI

IUPAC name
6-hydroxy-1,3-benzoxathiol-2-one
Molecular formula
C7H4O3S
Molecular weight
168.17 g/mol
Exact mass
167.98811516 Da
XLogP3
1.9
Topological polar surface area
71.8 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

TioxoloneThioxoloneTioxolonaTioxolonum1,3-Benzoxathiol-2-one, 6-hydroxy-6-Hydro-2-oxo-1,3-benzoxathioleS0FAJ1R9CDNSC-758240
16 more reported names
6-hydroxy-1,3(2H)-benzoxathiol-2-oneCHEBI:568021ThyioxoloneRefChem:898220D10AB03225-653-06-hydroxybenzo[d][1,3]oxathiol-2-oneCamynaTioxolonThioxalone6-hydroxy-2H-1,3-benzoxathiol-2-oneEINECS 225-653-0Tioxolone [INN:BAN:DCF]HMS3656G226-oxidanyl-1,3-benzoxathiol-2-oneAcnosan
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 4991-65-5

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How CAS 4991-65-5 is used on this site

CAS 4991-65-5 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 4991-65-5 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.