Butyl PBD

Butyl PBD
Names
Preferred IUPAC name
2-([1,1′-Biphenyl]-4-yl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole
Other names
2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole
2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.563
EC Number
  • 239-135-7
UNII
  • InChI=1S/C24H22N2O/c1-24(2,3)21-15-13-20(14-16-21)23-26-25-22(27-23)19-11-9-18(10-12-19)17-7-5-4-6-8-17/h4-16H,1-3H3 Y
    Key: XZCJVWCMJYNSQO-UHFFFAOYSA-N Y
  • InChI=1/C24H22N2O/c1-24(2,3)21-15-13-20(14-16-21)23-26-25-22(27-23)19-11-9-18(10-12-19)17-7-5-4-6-8-17/h4-16H,1-3H3
    Key: XZCJVWCMJYNSQO-UHFFFAOYAT
  • CC(C)(C)c1ccc(cc1)c2nnc(o2)c3ccc(cc3)c4ccccc4
Properties
C24H22N2O
Molar mass 354.44 g mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Butyl PBD or b-PBD (short for butyl-phenyl-bipheny-oxydiazole) is a fluorescent organic compound used in the Liquid Scintillator Neutrino Detector (LSND) at Los Alamos National Laboratory, USA.

The fluorescent emission of b-PBD is at λem = 364 nm for excitation at λex = 305 nm (in ethanol solution). As a scintillant in the LSND, it was used at a concentration of 31 mg/L (87 μmol/L) dissolved in mineral oil.

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