2,5-diphenyloxazole structural formula

2,5-diphenyloxazole structural formula

Structural formula

Business number 0253
Molecular formula C15H11NO
Molecular weight 221.25

2,5-diphenyl-1,3-oxazepine 2,5-diphenylazole

Numbering system

CAS number:92-71-7

MDL number:MFCD00005306

EINECS number:202-181-3

RTECS number:RP6825000

BRN number:157021

PubChem number:24893888

Physical property data

1. Character:Acicular crystals. Can evaporate slightly with water vapor.

2. Density (g/mL,25/4℃):1.0940

3. Relative vapor density (g/mL,AIR=1): Undetermined

4. Melting point (ºC): 74

5. Boiling point (ºC,Normal pressure):360

6. Boiling point (ºC, 94.7kpa): Undetermined

7. Refractive index:1.6231

8. Flash Point (ºC): 150

9. Specific optical rotation (º): Undetermined

10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa,25ºC): Undetermined

12. Saturated vapor pressure (kPa, 60ºC ): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Oil and water (octanol/Log value of the partition coefficient of water: undetermined

17. Explosion limit (%,V/V): Undetermined

18. Lower explosion limit (%,V/V): Undetermined

19. Solubility:Easily soluble in ethanol and ether, almost insoluble in water.

Toxicological data


Ecological data


Molecular structure data

1. Molar refractive index: 65.82

2. Molar volume (m3/mol):196.0

3. isotonic specific volume (90.2K):502.1

4. Surface Tension (dyne/cm):43.0

5. Polarizability10-24cm3): 26.09

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 2

5. Number of tautomers: none

6. Topological molecule polar surface area 26

7. Number of heavy atoms: 17

8. Surface charge: 0

9. Complexity: 231

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability


Storage method

This product should be sealed and stored in a cool place.

Synthesis method

will1gBenzoylaminobenzene Ethyl ketone is dissolved in5mlin sulfuric acid, heated over a water bath2min, pour into water, colorless crystals precipitate. Filter, there is petroleum ether (boiling range50-70) recrystallized to get2,5-Diphenyloxazole.


Scintillation reagent.