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CAS 20196-21-8

CAS 20196-21-8 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 20196-21-8

CAS 20196-21-8PubChem CID 88402

1,4-Tetrahydrothiazine-3-one

IUPAC name: thiomorpholin-3-one

Molecular formula: C4H7NOS
Molecular weight: 117.17 g/mol
Exact mass: 117.02483502 Da
XLogP3: 0.0
Topological polar surface area: 54.4 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

3-ThiomorpholinoneThiomorpholinone1,4-Thiazinan-3-oneEINECS 243-581-8UNII-SK56OUS8CHSK56OUS8CHNSC 27540BRN 0107799

16 more reported names

MEXORYL SPNSC-275404-27-00-02550 (Beilstein Handbook Reference)RefChem:196833THIOMORPHOLINONE [INCI]InChI=1/C4H7NOS/c6-4-3-7-2-1-5-4/h1-3H2,(H,5,63-OxothiomorpholineC4H7NOSF0848-0336CS-W0191461,4-thiazaperhydroin-3-oneFT-0763363AS-11SMSSF-0613147AS-11256DA-08491

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External database identifiers

EPA DTXSID:DTXSID00174033
PubMed:20028134
PubMed:19854053

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 20196-21-8

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How CAS 20196-21-8 is used on this site

CAS 20196-21-8 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 20196-21-8 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.