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Merck
CN

43140

2,5-Diphenyloxazole

puriss., suitable for scintillation, ≥99.0% (TLC)

Synonym(s):

DPO, PPO

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About This Item

Empirical Formula (Hill Notation):
C15H11NO
CAS Number:
92-71-7
Molecular Weight:
221.25
UNSPSC Code:
12352103
PubChem Substance ID:
24867013
EC Number:
202-181-3
Beilstein/REAXYS Number:
157021
MDL number:
MFCD00005306

Key Documents

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grade

puriss.

assay

≥99.0% (TLC)

bp

360 °C (lit.)

mp

72-73 °C, 72-74 °C (lit.)

fluorescence

λex 302 nm; λem 362 nm in ethanol

suitability

suitable for scintillation

SMILES string

CC(C)[C@@]12C[C@@H]1[C@@H](C)C(=O)C2.CC(C)[C@@]34C[C@@H]3[C@H](C)C(=O)C4, c1ccc(cc1)-c2cnc(o2)-c3ccccc3

InChI

1S/C15H11NO/c1-3-7-12(8-4-1)14-11-16-15(17-14)13-9-5-2-6-10-13/h1-11H

InChI key

CNRNYORZJGVOSY-UHFFFAOYSA-N

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Preparation Note

λmax. 303 nm, mol. absorption: 27540 (in cyclohexanel)

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

386.6 - 393.8 °F - closed cup

flash_point_c

197 - 201 °C - closed cup

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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G G Perng et al.
Analytical biochemistry, 173(2), 387-392 (1988-09-01)
Eight different methods of fluorographic enhancement of sensitivity to 35S decay after gel electrophoresis were compared. Using Kodak X-Omat AR X-ray film, we found that some fluors were about equivalent to 2,5-diphenyloxazole/dimethyl sulfoxide embedding, whereas several other fluors were not
H J Meyer et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 6(15), 2809-2817 (2000-09-14)
Spectral and time-resolved fluorescence properties as well as relative fluorescence quantum yields of carbodiimide derivatives of 2.5-diphenyloxazole (PPO) (prepared by H2S elimination from the corresponding thioureas), of some intermediates in the preparation, and of several other PPO derivatives were investigated
Olivier Braem et al.
Physical chemistry chemical physics : PCCP, 14(10), 3513-3519 (2012-02-07)
We present a femtosecond broad-band fluorescence up-conversion study of the vibrational relaxation dynamics of two UV chromophores, 2,5-diphenyloxazole (PPO) and para-terphenyl (pTP), pumped with a large excess of vibrational energy (>2000 cm(-1)). The band narrowing of the transient fluorescence spectrum
Carmen Ka Man Chan et al.
Inorganic chemistry, 48(7), 2855-2864 (2009-03-12)
A series of luminescent platinum(II) alkynyl complexes containing 2,5-diphenyl-1,3,4-oxadiazole (oxa-2,5) and 10,15-dihydro-5H-diindeno[1,2-a;1',2'-c]fluorene (truxene) as the cores and different electron donors at the periphery has been synthesized and characterized. These complexes showed long-lived emissions in both solution and in the solid
K Yamamoto et al.
Pharmaceutical research, 11(2), 331-336 (1994-02-01)
Molecular states of 2,5-diphenyloxazole (PPO) were investigated in ground mixtures with gamma-cyclodextrin (gamma-CD). Crystalline PPO gradually became amorphous upon grinding in the presence of gamma-CD. Solid-state fluorescence spectra of the ground mixtures showed that the fluorescence emission peak due to
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Global Trade Item Number

SKUGTIN
755842-25G04061832909080
63176-1G-F04061826010990

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