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
CAS Number	15082-28-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	76483 ;
ECHA InfoCard	100.035.563
EC Number	239-135-7;
PubChem CID	84782;
UNII	YKR9AP6LRZ ;
CompTox Dashboard (EPA)	DTXSID5065851 ;
	InChI 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 Key: XZCJVWCMJYNSQO-UHFFFAOYSA-N ; 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;
	SMILES CC(C)(C)c1ccc(cc1)c2nnc(o2)c3ccc(cc3)c4ccccc4;
Properties
Chemical formula	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). verify (what is ?) Infobox references

Butyl PBD or b-PBD (short for butyl-phenyl-bipheny-oxydiazole^[1]) is a fluorescent organic compound used in the Liquid Scintillator Neutrino Detector (LSND) at Los Alamos National Laboratory, USA.^[1]

The fluorescent emission of b-PBD is at λ_em = 364 nm for excitation at λ_ex = 305 nm (in ethanol solution).^[2] As a scintillant in the LSND, it was used at a concentration of 31 mg/L (87 μmol/L) dissolved in mineral oil.^[1]

References

^ ^a ^b ^c Athanassopoulos, C.; Auerbach, L. B.; Bauer, D.; Bolton, R. D.; Burman, R. L.; Cohen, I.; Caldwell, D. O.; Dieterle, B. D.; Donahue, J. B.; Eisner, A. M.; Fazely, A.; Federspiel, F. J.; M. Gray, G. T. Garvey; Gunasingha, R. M.; Highland, V.; Imlay, R.; Johnston, K.; Kim, H. J.; Louis, W. C.; Lu, A.; Margulies, J.; Mills, G. B.; McIlhany, K.; Metcalf, W.; Reeder, R. A.; Sandberg, V.; Schillaci, M.; Smith, D.; Stancu, I.; Strossman, W.; Tayloe, R.; Van Dalen, G. J.; Vernon, W.; Wang, Y-X.; White, D. H.; Whitehouse, D.; Works, D.; Xiao, Y.; Yellin, S. (1997), "The Liquid Scintillator Neutrino Detector and LAMPF Neutrino Source", Nucl. Instrum. Methods A, 388: 149–72, arXiv:nucl-ex/9605002v1, Bibcode:1997NIMPA.388..149A, doi:10.1016/S0168-9002(96)01155-2.
^ B8378 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole ≥99%, Sigma-Aldrich, retrieved 2010-05-22.

[LSND-1] Athanassopoulos, C.; Auerbach, L. B.; Bauer, D.; Bolton, R. D.; Burman, R. L.; Cohen, I.; Caldwell, D. O.; Dieterle, B. D.; Donahue, J. B.; Eisner, A. M.; Fazely, A.; Federspiel, F. J.; M. Gray, G. T. Garvey; Gunasingha, R. M.; Highland, V.; Imlay, R.; Johnston, K.; Kim, H. J.; Louis, W. C.; Lu, A.; Margulies, J.; Mills, G. B.; McIlhany, K.; Metcalf, W.; Reeder, R. A.; Sandberg, V.; Schillaci, M.; Smith, D.; Stancu, I.; Strossman, W.; Tayloe, R.; Van Dalen, G. J.; Vernon, W.; Wang, Y-X.; White, D. H.; Whitehouse, D.; Works, D.; Xiao, Y.; Yellin, S. (1997), "The Liquid Scintillator Neutrino Detector and LAMPF Neutrino Source", Nucl. Instrum. Methods A, 388: 149–72, arXiv:nucl-ex/9605002v1, Bibcode:1997NIMPA.388..149A, doi:10.1016/S0168-9002(96)01155-2.

[2] B8378 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole ≥99%, Sigma-Aldrich, retrieved 2010-05-22.

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