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Official EU label nameGlossary entry 3500

BIS-(T-BUTYL BENZOXAZOLYL) THIOPHENE

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.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
2

Resolved substance identity

CAS:7128-64-5
EC:230-426-4
Ingredient index records:
BIS-(T-BUTYL BENZOXAZOLYL) THIOPHENE
Cosmetic functions: SKIN CONDITIONING - MISCELLANEOUS

Bis-(t-Butyl Benzoxazolyl) Thiophene is the organic compound that conforms to the formula

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1 matched or reported name
BIS-(T-BUTYL BENZOXAZOLYL) THIOPHENE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name BIS-(T-BUTYL BENZOXAZOLYL) THIOPHENE.

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 7128-64-5
CAS 7128-64-5PubChem CID 292429

Fluorescent brightener 184

2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene is a benzoxazole. — ChEBI

IUPAC name
5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole
Molecular formula
C26H26N2O2S
Molecular weight
430.6 g/mol
Exact mass
430.17149925 Da
XLogP3
8.0
Topological polar surface area
80.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiopheneBenzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-NSC 158163EINECS 230-426-4Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-tert-butyl-Bis(tert-butyl benzoxazolyl) thiopheneW7UR9129GPBRIGHTENER OB
16 more reported names
TINOPAL OBUVITEX 3BSA2,2'-(2,5-Thiophenediyl)bis(5-tert-butylbenzoxazole)KEYFLUOR WHITE PL2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene2,5-Bis(5'-tert-butyl-2-benzoxazolyl)thiopheneNSC-1581632,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole)C.I. Fluorescent Brightening Agent 184EC 230-426-4Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-bis(t-butyl benzoxazolyl) thiopheneCI 515245C.I. 515245C.I. FLUORESCENT BRIGHTENER 184BENZOXAZOLE2,2'-(2,5-Thiophenediyl)bis[5-tert-butylbenzoxazole]
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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.

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 assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS 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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