2,5-双(5-叔丁基-2-苯并恶唑基)噻吩

Description

2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene · CAS 7128-64-5 · C26H26N2O2S. UNII W7UR9129GP.

Identification

CAS Registry Number	7128-64-5
PubChem CID	292429
Molecular formula	C26H26N2O2S
IUPAC name	5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole
UNII (FDA)	W7UR9129GP

Computed Descriptors

Molecular Weight	430.6
XLogP3	8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	430.17149925
Monoisotopic Mass	430.17149925
Topological Polar Surface Area	80.3
Heavy Atom Count	31
Formal Charge	0

Physical description & handling notes

• Other Solid; Dry Powder; Large Crystals
• Yellow to green solid; [Merck Index] Yellow powder; [Alfa Aesar MSDS]

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS 2,2'-(2,5-THIOPHENEDIYL)-BIS(5-TERT-BUTYLBENZOXAZOLE) 2,2'-(2,5-THIOPHENEDIYL)-BIS (5-TERT-BUTYLBENZOXAZOLE)
GHS notification summary	11.9% (408 / 3430)

GHS Hazard Classification

GHS notification summary	11.9% (408 / 3430)
Reported hazard statements	H413 (86%)

Documented Uses

• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Not Known or Reasonably Ascertainable
• Plastics Material and Resin Manufacturing
• All Other Basic Organic Chemical Manufacturing
• Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-: ACTIVE

Synonyms

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene; FLUORESCENT BRIGHTENER 184; Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-; 5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole; NSC 158163; EINECS 230-426-4; Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-tert-butyl-; Bis(tert-butyl benzoxazolyl) thiophene; W7UR9129GP; BRIGHTENER OB; TINOPAL OB; UVITEX 3BSA; 2,2'-(2,5-Thiophenediyl)bis(5-tert-butylbenzoxazole); KEYFLUOR WHITE PL; 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene; 2,5-Bis(5'-tert-butyl-2-benzoxazolyl)thiophene

Frequently Asked Questions

What are the CAS number and molecular formula of 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene?

CAS 7128-64-5; molecular formula C26H26N2O2S; molecular weight — g/mol.

What other names is 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene known by?

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene, FLUORESCENT BRIGHTENER 184, Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-, 5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole, NSC 158163, EINECS 230-426-4.

What is the regulatory status of 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; 2,2'-(2,5-THIOPHENEDIYL)-BIS(5-TERT-BUTYLBENZOXAZOLE).

Is 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene classified as hazardous?

11.9% of GHS notifications report no hazard classification (408 of 3430).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.