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POPOP

Names
Preferred IUPAC name 2,2′-(1,4-Phenylene)bis(5-phenyl-1,3-oxazole)
Other names POPOP
Identifiers
CAS Number	1806-34-4
3D model (JSmol)	Interactive image
ChEBI	CHEBI:52236
ChemSpider	14960
ECHA InfoCard	100.015.731
EC Number	217-304-6
PubChem CID	15732
UNII	MDI740G2Q0
CompTox Dashboard (EPA)	DTXSID7061984
InChI InChI=1S/C24H16N2O2/c1-3-7-17(8-4-1)21-15-25-23(27-21)19-11-13-20(14-12-19)24-26-16-22(28-24)18-9-5-2-6-10-18/h1-16HKey: MASVCBBIUQRUKL-UHFFFAOYSA-N InChI=1/C24H16N2O2/c1-3-7-17(8-4-1)21-15-25-23(27-21)19-11-13-20(14-12-19)24-26-16-22(28-24)18-9-5-2-6-10-18/h1-16HKey: MASVCBBIUQRUKL-UHFFFAOYAO
SMILES C1=CC=C(C=C1)C2=CN=C(O2)C3=CC=C(C=C3)C4=NC=C(O4)C5=CC=CC=C5
Properties
Chemical formula	C24H16N2O2
Molar mass	364.40 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is  ?) Infobox references

POPOP or 1,4-bis(5-phenyloxazol-2-yl) benzene is a scintillator. It is used as a wavelength shifter (also called a "secondary scintillator"), which means that it converts shorter wavelength light to longer wavelength light. Its output spectrum peaks at 410 nm, which is violet. POPOP is used in both solid and liquid organic scintillators.

References

1. Mechanism of Liquid Scintillation Counting, National Diagnostics, retrieved 24 Sept 2007

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