Molekula
2,5-Bis-(5'-tert-butylbenzoxazolyl)-2'-thiophene
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2,5-Bis-(5'-tert-butylbenzoxazolyl)-2'-thiophene (BBOT) is a highly efficient fluorescent compound widely used as a scintillator in liquid scintillation counting and as a brightener in plastics and textiles. It exhibits strong blue fluorescence under UV light, making it ideal for applications requiring high sensitivity and clarity. This chemical has a CAS number of 7128-64-5, a molecular formula of C26H26N2O2S, and a molecular weight of 430.56 g/mol. It can be stored safely at ambient conditions, though it carries a warning signal for handling. Molekula supplies 2,5-Bis-(5'-tert-butylbenzoxazolyl)-2'-thiophene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
-
100 g — £106.90 per pack ex VAT · £128.28 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Pale yellow / pale green powder |
| Melting Point | 210 - 212 °C |
| Ash | ≤0.3 % |
| Identification | Conforms to reference |
| Content | ≥98.5 % |
| Volatile Matter | ≤0.5 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 0 °C |
| Transport Class | Not regulated |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 12059739 |
| CAS Number | 7128-64-5 |
| IUPAC Name | 5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole |
| EC Number | 230-426-4 |
| Molecular Formula | C26H26N2O2S |
| Molecular Weight | 430.56 |
| Exact Mass | 430.1715 |
| SMILES | CC(C)(C)C1=CC2=C(C=C1)OC(=N2)C3=CC=C(S3)C4=NC5=C(O4)C=CC(=C5)C(C)(C)C |
| InChIKey | AIXZBGVLNVRQSS-UHFFFAOYSA-N |
| InChI | InChI=1S/C26H26N2O2S/c1-25(2,3)15-7-9-19-17(13-15)27-23(29-19)21-11-12-22(31-21)24-28-18-14-16(26(4,5)6)8-10-20(18)30-24/h7-14H,1-6H3 |
| PubChem CID | 292429 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2934.99.4400 |
| Tariff Code | 2934999090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H332 Harmful if inhaled
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P271 Use only outdoors or in a well-ventilated area
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+P313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2,2'-(2,5-Thiophenediyl)bis(5-tert-butylbenzoxazole)
- 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
- Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-tert-butyl-
- Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-
- Bis(tert-butyl benzoxazolyl) thiophene
- BRIGHTENER OB
- FLUORESCENT BRIGHTENER 184
- KEYFLUOR WHITE PL
- TINOPAL OB
- UVITEX 3BSA
Frequently asked questions
What is 2,5-Bis-(5'-tert-butylbenzoxazolyl)-2'-thiophene commonly used for?
This compound is primarily used as a **fluorescent dye** and **organic semiconductor** in optoelectronic applications, such as OLEDs, sensors, and organic photovoltaics.
What is the chemical formula and molecular weight of this product?
The formula is **C₂₆H₂₆N₂O₂S**, and the molecular weight is **430.56 g/mol**.
How should this chemical be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible materials.
What purity grades are available for this product?
Molekula supplies this compound in **research-grade purity (≥98%)** for laboratory and development use.
Can Molekula supply this product in bulk quantities?
Yes, we can provide bulk quantities upon request—please contact our sales team for pricing and availability.
What documentation comes with an order of this chemical?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.