2,5-Diphenyloxazole(DPO) - Scintillation Pure, ≥99% , CAS No.92-71-7

CAS: 92-71-7 Cat. No.: D100606 Molecular Weight: 221.25 Beilstein Registry Number: 157021 EC Number: 202-181-3
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GRADE & PURITY Scintillation Pure ? Scintillation grade — low-quench, low-background quality for liquid scintillation counting. Use in radiometric counting where purity affects count efficiency. ≥99%
Synonyms
DPO, PPO | NSC49168 | NSC-49168 | NSC 24856 | NSC24856 | NSC-24856 | A844321 | STL071303 | 2P8A647RYF | AS-14429 | UNII-2P8A647RYF | Tritosol | 2,5-Diphenyloxazole | 2,5-diphenyl-oxazole | 2,5-Diphenyloxazole, 99%, suitable for scintillation | 4-27-00-014
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
5g
D100606-5g
3
$12.90
25g
D100606-25g
3
$46.90
100g
D100606-100g
3
$137.90
500g
D100606-500g
1
$594.90
Enter a quantity for the sizes you want to add.
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Why this grade

Scintillation Pure, ≥99% Scintillation Pure for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 16 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Product Introduction

2,5-Diphenyloxazole (PPO) is an oxazole that can be used as a scintillator and a laser dye. It has fluorescence at a wavelength of 375 nm. It can be used as a wavelength shifter in liquid samples due to their high quantum yield and large strokes shift.


Application

PPO can be used as a dopant that improves the photo-electric feedback of plastic scintillators which are used as radiation detectors for nuclear materials. It can be coated on peptide substrates to facilitate radioactive labelling which can enable determination of substrate specificity of lysine methyltransferase enzymes. It may also be used in the fabrication of organic luminescent materials which can be used in light emitting diodes (LEDs).

Specifications

Synonyms
DPO, PPO | NSC49168 | NSC-49168 | NSC 24856 | NSC24856 | NSC-24856 | A844321 | STL071303 | 2P8A647RYF | AS-14429 | UNII-2P8A647RYF | Tritosol | 2, 5-Diphenyloxazole | 2, 5-diphenyl-oxazole | 2, 5-Diphenyloxazole, 99%, suitable for scintillation | 4-27-00-014
Specifications & Purity
Scintillation Pure, ≥99%
Storage
Room temperature
Shipped In
Normal
Grade
Scintillation Pure
Purity
≥99%
Names and Identifiers
Pubchem Sid488180289
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488180289
Canonical SmilesC1=CC=C(C=C1)C2=CN=C(O2)C3=CC=CC=C3
IUPAC Name2,5-diphenyl-1,3-oxazole
InChIKeyCNRNYORZJGVOSY-UHFFFAOYSA-N
INCHI1S/C15H11NO/c1-3-7-12(8-4-1)14-11-16-15(17-14)13-9-5-2-6-10-13/h1-11H
Isomeric SMILES C1=CC=C(C=C1)C2=CN=C(O2)C3=CC=CC=C3
WGK Germany 3
RTECS RP6825000
Molecular Weight 221.25
Beilstein 157021
Reaxy-Rn 157021
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=157021&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

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✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassOxazoles
Intermediate Tree Nodes Not available
Direct ParentPhenyl-1,3-oxazoles
Alternative Parents 2,5-disubstituted oxazoles  Benzene and substituted derivatives  Heteroaromatic compounds  Oxacyclic compounds  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Phenyl-1,3-oxazole - 2,5-disubstituted 1,3-oxazole - Benzenoid - Monocyclic benzene moiety - Heteroaromatic compound - Oxacycle - Azacycle - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phenyl-1,3-oxazoles. These are aromatic heterocyclic compounds containing a 1,3-oxazole substituted at one or more positions by a phenyl group.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

34 results found

Lot NumberCertificate TypeDateItem
E2619594Certificate of AnalysisMar 27, 2026 D100606
E2619595Certificate of AnalysisMar 27, 2026 D100606
D2610211Certificate of AnalysisMar 27, 2026 D100606
D2610210Certificate of AnalysisMar 27, 2026 D100606
D2610209Certificate of AnalysisMar 27, 2026 D100606
C2211196Certificate of AnalysisDec 10, 2025 D100606
C2211152Certificate of AnalysisDec 10, 2025 D100606
J2510398Certificate of AnalysisAug 08, 2025 D100606
J2510331Certificate of AnalysisAug 08, 2025 D100606
J2510330Certificate of AnalysisAug 08, 2025 D100606
H2125442Certificate of AnalysisJun 09, 2025 D100606
D2525167Certificate of AnalysisMar 01, 2025 D100606
B2515067Certificate of AnalysisNov 02, 2024 D100606
K2411210Certificate of AnalysisNov 02, 2024 D100606
K2411211Certificate of AnalysisNov 02, 2024 D100606
K2411212Certificate of AnalysisNov 02, 2024 D100606
K2411213Certificate of AnalysisNov 02, 2024 D100606
K2411215Certificate of AnalysisNov 02, 2024 D100606
I2423134Certificate of AnalysisSep 05, 2024 D100606
I2423135Certificate of AnalysisSep 05, 2024 D100606
E2516267Certificate of AnalysisJul 15, 2024 D100606
E2521675Certificate of AnalysisJul 15, 2024 D100606
E2516266Certificate of AnalysisJul 15, 2024 D100606
D2026049Certificate of AnalysisFeb 19, 2024 D100606
E1920117Certificate of AnalysisMar 09, 2023 D100606
B2318617Certificate of AnalysisSep 09, 2022 D100606
B2320037Certificate of AnalysisSep 09, 2022 D100606
B2318824Certificate of AnalysisSep 09, 2022 D100606
B2318790Certificate of AnalysisSep 09, 2022 D100606
B2318775Certificate of AnalysisSep 09, 2022 D100606
B2318754Certificate of AnalysisSep 09, 2022 D100606
B2318739Certificate of AnalysisSep 09, 2022 D100606
C2211243Certificate of AnalysisDec 28, 2021 D100606
C2211221Certificate of AnalysisDec 28, 2021 D100606

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Chemical and Physical Properties
Boil Point(°C)360°C
Melt Point(°C)72°C
Molecular Weight221.250 g/mol
XLogP34.700
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count2
Exact Mass221.084 Da
Monoisotopic Mass221.084 Da
Topological Polar Surface Area26.000 Ų
Heavy Atom Count17
Formal Charge0
Complexity231.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Yiyao Cao, Yuxin Qian, Hong Ren, Liangliang Yin, Yuhan Xie, Yanqin Ji.  (2023)  Determination of carbon-14 in marine biota using oxidation combustion and gel suspension liquid scintillation counting.  FOOD CHEMISTRY,      [PMID:37956594] [10.1016/j.foodchem.2023.137914]
2. Mingzhu Hu, Yumeng Wang, Shengpeng Hu, Zongpeng Wang, Bi Du, Yanjun Peng, Jiawei Yang, Yunjie Shi, Dongdong Chen, Xi Chen, Ziwen Zhuang, Zhixun Wang, Xi Chen, Jiecheng Yang, Yongshuai Ge, Eyu Wang, Quan Wen, Shuang Xiao, Ming Ma, Weimin Li, Jie Zhang, De Ning, Lei Wei, Chunlei Yang, Ming Chen.  (2023)  A pixelated liquid perovskite array for high-sensitivity and high-resolution X-ray imaging scintillation screens.  Nanoscale,  15  (38): (15635-15642).  [PMID:37721742] [10.1039/D3NR02841K]
3. Shengnan Zhai, Hang Liu, Xianchun Xia, Haosheng Li, Xinyou Cao, Zhonghu He, Wujun Ma, Cheng Liu, Jianmin Song, Aifeng Liu, Jingjuan Zhang, Jianjun Liu.  (2023)  Functional analysis of polyphenol oxidase 1 gene in common wheat.  Frontiers in Plant Science,      [PMID:37583591] [10.3389/fpls.2023.1171839]
4. Hu Yichen, Ma Jiaju, Liu Tonghuan, Zhang Yongjie, Yu Yuhong, Sun Zhiyu, Fang Fang, Dong Tianhao, Zhao Yanhong, Zhou Gen.  (2023)  Preparation and characterization of plastic scintillators with different proportions.  JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,  332  (4): (1047-1054).  [PMID:] [10.1007/s10967-022-08748-6]
5. Xingyan Pang, Jiaoyang Li, Pengfei Xu, Wenjun Yang, Lei Huang, Sufen Zhang, Zhiyang Yu, Qingfu Ye.  (2022)  Environmental fate and metabolism of the systemic triazolinthione fungicide prothioconazole in different aerobic soils.  JOURNAL OF HAZARDOUS MATERIALS,      [PMID:37055988] [10.1016/j.jhazmat.2022.130583]
6. Yansu Lan, Die Zhou, Longhuan Lai, Huanhuan Qi, Lei Xia, Stef Depuydt, Bart Van der Bruggen, Yan Zhao.  (2022)  A monovalent selective anion exchange membrane made by poly(2,6-dimethyl-1,4-phenyl oxide) for bromide recovery.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2022.122377]
7. Ranran Zhao, Ke Li, Runze Liu, Mansoor Sarfraz, Imran Shakir, Yuxi Xu.  (2017)  Reversible 3D self-assembly of graphene oxide and stimuli-responsive polymers for high-performance graphene-based supercapacitors.  Journal of Materials Chemistry A,  (36): (19098-19106).  [PMID:] [10.1039/C7TA05908F]
8. Xuesong Li, Jinmeng Hao, Qiyang Jiang, Jianxin Mu, Zhenhua Jiang.  (2015)  Phosphorus-containing polyhedral oligomeric silsesquioxane/polyimides hybrid materials with low dielectric constant and low coefficients of thermal expansion.  JOURNAL OF APPLIED POLYMER SCIENCE,  132  (39):   [PMID:] [10.1002/app.42611]
9. Juan Tong, Tianhao Dong, Chen Du, Tonghuan Liu, Keliang Shi, Junqiang Yang, Xiaolin Hou.  (2024)  An integrated strategy for separation and detection of 99Tc based on a novel plastic scintillating resin.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.129643]
10. Yi Ding, Yu Bai, Tianci Wang, Zan Gao, Yinong Gao, Xiao Wang, Bingyang Li, Pengfei Wang, Chunai Dai, Xin Wang, Zhen Li.  (2025)  Strong and Tough Liquid Crystal Elastomers Reinforced by Cellulose Nanocrystals for Energy Absorption.  POLYMER COMPOSITES,      [PMID:] [10.1002/pc.70241]
11. Wei Hu, Lei Wang, Quanyong Wang, Anbo Luan, Yuliang Mai, Linjia Huang, Yongjun Chen, Shijing Yan, Wenjie Xiong.  (2019)  Polypropylene Glycol-Polyoxytetramethylene Glycol Multiblock Copolymers with High Molecular Weight: Synthesis, Characterization, and Silanization.  MOLECULES,  24  (23): (4317).  [PMID:31779185] [10.3390/molecules24234317]
12. Le Cheng, Haoyue Bai, Mingfang Zhang, Fengping Yang, Difeng Ren, Yunpeng Du.  (2025)  Inhibitory effect and molecular mechanism on polyphenol oxidase by ultraviolet-C and L-cysteine treatment.  Current Research in Food Science,      [PMID:40458118] [10.1016/j.crfs.2025.101062]
13. Puhong Yi, Yue Xu, Yuhua Hao, Zhiqiang Liu, Yaping Xue, Liqun Jin, Yuguo Zheng.  (2025)  Structural Analysis and Mutability Landscape-Guided Engineering of ω-Transaminase for Improved Catalytic Performance.  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,      [PMID:40244570] [10.1021/acs.jafc.4c13142]
14. Yi Ding, Xin Wang, Yu Bai, Bingyang Li, Xiao Wang, Yinong Gao, Chunai Dai, Zhen Li, Pengfei Wang.  (2025)  Mesoporous silica nanoparticles doped in liquid crystal elastomers for synergetically enhancing vibration damping and energy absorption properties.  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,      [PMID:] [10.1016/j.colsurfa.2025.137334]
15. Hyeong Gu Kang, Han Cheol Yang, Bartosz Mindur, Tomasz Szumlak, Yong Kyun Kim.  (2026)  Fabrication and characterization of uniformly dispersed Pb(NO3)2-loaded 3D-printed plastic scintillators with enhanced gamma-ray detection capabilities.  RADIATION PHYSICS AND CHEMISTRY,      [PMID:] [10.1016/j.radphyschem.2026.113811]
16. Li Hongwei, Lv Shichao, Qiu Jianrong, Zhou Shifeng.  (2026)  Organic-inorganic hybrid scintillating glass for high-energy particle detection.  Nature Communications,      [PMID:] [10.1038/s41467-026-72884-w]
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