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CAS 7128-64-5

CAS 7128-64-5 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 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.

Records for CAS 7128-64-5

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How CAS 7128-64-5 is used on this site

CAS 7128-64-5 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 7128-64-5 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.