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P3754

Sigma-Aldrich

1,4-Bis(5-phenyl-2-oxazolyl)benzene

BioReagent, suitable for scintillation

Synonym(s):

1,4-Bis(5-phenyl-2-oxazolyl)benzene, 2,2′-p-Phenylene-bis(5-phenyloxazole), Di(phenyl-5-oxazolyl-2)-1,4-benzene, POPOP

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About This Item

Empirical Formula (Hill Notation):
C24H16N2O2
CAS Number:
1806-34-4
Molecular Weight:
364.40
Beilstein/REAXYS Number:
325741
EC Number:
217-304-6
MDL number:
MFCD00005309
UNSPSC Code:
12352200
PubChem Substance ID:
24898445
NACRES:
NA.32

product line

BioReagent

Quality Level

200

form

powder

mp

242-246 °C (lit.)

suitability

suitable for scintillation

SMILES string

c1ccc(cc1)-c2cnc(o2)-c3ccc(cc3)-c4ncc(o4)-c5ccccc5

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/h1-16H

InChI key

MASVCBBIUQRUKL-UHFFFAOYSA-N

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General description

1,4-Bis(5-phenyl-2-oxazolyl) benzene, also known as POPOP, is a well-known scintillation luminophore. It is an efficient fluorescent organic compound with high stokes shift. The POPOP dye is photostable in polar protic and polar aprotic solvents. The resulting photochemical quantum yield and the photodecomposition rate depend on the solvent′s electron affinity.

Application

1,4-Bis(5-phenyl-2-oxazolyl) benzene or POPOP is widely used to detect radioactivity by scintillation counting.

Features and Benefits

1,4-Bis(5-phenyl-2-oxazolyl) benzene or POPOP has the following advantages:

  • High fluorescence quantum yield.
  • High molar absorptivity.
  • Large Stokes Shift.
  • High Photostability in most organic solvents.

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Description
Pricing

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Sigma-Aldrich

B8378

2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole

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Organic photodetectors (PDs) based on printing technologies will allow to expand the current field of PD applications toward large-area and flexible applications in areas such as medical imaging, security, and quality control, among others. Inkjet printing is a powerful digital
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Biochemistry, 27(17), 6203-6208 (1988-08-23)
Measurements of homogeneous and heterogeneous fluorescence intensity decays using a hybrid time-correlated single photon counting/multifrequency phase fluorometer are reported. A trio of fluorophores exhibiting a range of decay profiles was selected. p-Terphenyl, 1,4-bis[2-(4-methyl-5-phenyloxazolyl)]benzene [(Me)2POPOP], and p-bis[2-(5-phenyloxazolyl)]benzene (POPOP), commonly used reference
B M Kopriwa
Histochemistry, 68(3), 265-279 (1980-01-01)
Several reports have indicated that scintillators enhance the intensity of radioautographic reactions. If this were the case, the use of scintillators would shorten the exposure time of radioautographs and the production of radioautographs would be accelerated. It was, therefore, decided
Xiaohui Hou et al.
Analytical biochemistry, 368(1), 100-110 (2007-06-15)
In this study, micron-sized poly(styrene-co-glycidyl methacrylate) (PSt-GMA) fluorescent microspheres of 5.1microm in diameter were synthesized via dispersion polymerization of styrene and glycidyl methacrylate in the presence of 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), which provided surface functional groups for covalent immobilization of enzymes.
Kadir Aslan et al.
Analytical chemistry, 80(19), 7304-7312 (2008-09-04)
The use of zinc thin films deposited onto glass supports for surface plasmon coupled fluorescence (SPCF) over a broad 200 nm wavelength range is demonstrated. Fresnel calculations performed in the ultraviolet and visible spectral range are predicted to generate surface
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