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InventoryRef 8077315/10/2010

THIOMORPHOLINONE

Thiomorpholin-3-one

THIOMORPHOLINONE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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 Ų
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
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.

Inventory details for THIOMORPHOLINONE

INCI name

THIOMORPHOLINONE

Description

Thiomorpholin-3-one

Record provenance

Inventory reference
80773
Imported identity
THIOMORPHOLINONE
Source update
15/10/2010
European Commission CosIng source notes

Key data

Restriction
Function
ANTIOXIDANT
Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
SKIN CONDITIONING
Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How THIOMORPHOLINONE appears in the CosIng inventory

The CosIng inventory lists THIOMORPHOLINONE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

THIOMORPHOLINONE is also tagged with 2 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

THIOMORPHOLINONE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, THIOMORPHOLINONE carries the following function designation(s):

CAS 20196-21-8 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for THIOMORPHOLINONE

This page reproduces the CosIng inventory entry for THIOMORPHOLINONE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research THIOMORPHOLINONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

Tools & next steps

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