Official EU label nameGlossary entry 23751

PYRIDYLOXIDE T-BUTYLNITRONE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Resolved identifiers

Resolved substance identity

CAS:66893-81-0

EC:266-512-3

Ingredient index records:

PYRIDYLOXIDE T-BUTYLNITRONE

Cosmetic functions: ANTIOXIDANT

2-Propanamine, 2-Methyl-N-[(1-Oxido-4-Pyridinyl)Methylene]-, N-Oxide; 1,1-dimethyl-N-(4-pyridylmethylene)ethylamine N,N'-dioxide

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1 matched or reported name

PYRIDYLOXIDE T-BUTYLNITRONE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name PYRIDYLOXIDE T-BUTYLNITRONE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 66893-81-0

CAS 66893-81-0PubChem CID 135532295

alpha-(4-Pyridyl-1-oxide)-N-tert-butylnitrone

IUPAC name: N-tert-butyl-1-(1-oxidopyridin-1-ium-4-yl)methanimine oxide

Molecular formula: C10H14N2O2
Molecular weight: 194.23 g/mol
Exact mass: 194.105527694 Da
XLogP3: -0.2
Topological polar surface area: 54.2 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

POBN4-POBNPyridyloxide tert-butylnitrone2140SM8Q5ON-TERT-BUTYL-'A-(4-PYRIDL)NITRONE N'-OXIDE4-PyOBN4-pyridyl-1-oxide-T-butylnitroneRefChem:111041

16 more reported names

266-512-3N-tert-Butyl-alpha-(4-pyridyl-1-oxide)nitronealpha-(4-Pyridyl N-oxide)-N-tert-butylnitronetert-butyl-[(1-oxidanidylpyridin-4-ylidene)methyl]-oxidanylidene-azaniumtert-butyl-[(1-oxidopyridin-4-ylidene)methyl]-oxoazaniumPyridyloxide t-butylnitrone(Z)-2-methyl-N-((1-oxidopyridin-4-yl)methylene)propan-2-amine oxideAS-55806DA-66790HY-114713alpha-(4-pyridyl-N-oxide)-N-t-butylnitroneCS-0064148C-(4-PYRIDINYL-N-OXIDE)-N-TERT-BUTYLNITRONEN-tert-Butyl-|A-(4-pyridyl-1-oxide)nitrone(POBN).ALPHA.-(4-PYRIDYL-1-OXIDE)-N-T-BUTYLNITRONE.ALPHA.-(4-PYRIDYL-1-OXIDE)-N-TERT-BUTYLNITRONE

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External database identifiers

EPA DTXSID:DTXSID60217036
PubMed:17210446
PubMed:2022345

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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