4,4'-Bis(2-benzoxazolyl)stilbene
荧光增白剂OB-1
Also known as: Optical brightener OB-1, Fluorescent Brightener OB-1, 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole, 4,4'-Bis(benzo[d]oxazol-2-yl)stilbene, C.I. Fluorescent Brightener 393
4,4'-Bis(2-benzoxazolyl)stilbene (CAS 1533-45-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C28H18N2O2 and a molecular weight of 414.455 g/mol. It is also known as Optical brightener OB-1, Fluorescent Brightener OB-1 and 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole. Key properties include a melting point of >300 °C(lit.), a boiling point of 566.8±39.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 285.1±21.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1533-45-5
- Jingsj CID
- J-11382-5
- Molecular Formula
- C28H18N2O2
- Chinese Name
- 荧光增白剂OB-1
- Molecular Weight
- 414.455 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | 566.8±39.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 285.1±21.0 °C |
Frequently Asked Questions
What is the CAS number of 4,4'-Bis(2-benzoxazolyl)stilbene?
The CAS number of 4,4'-Bis(2-benzoxazolyl)stilbene is 1533-45-5.
What are the molecular formula and molecular weight of 4,4'-Bis(2-benzoxazolyl)stilbene?
4,4'-Bis(2-benzoxazolyl)stilbene has molecular formula C28H18N2O2 and molecular weight 414.455 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,4'-Bis(2-benzoxazolyl)stilbene (CAS 1533-45-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11382-5 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.