Heterocyclic Building Blocks-Benzoxazole

I found the field of Materials Science; Physics very interesting. Saw the article A linear D-pi-A based hole transport material for high performance rigid and flexible planar organic-inorganic hybrid perovskite solar cells published in 2019. Application In Synthesis of 4,4′-Dibromobiphenyl, Reprint Addresses Jin, SH (corresponding author), Pusan Natl Univ, Inst Plast Informat & Energy Mat, Dept Chem Educ, Grad Dept Chem Mat, Busandaehakro 63-2, Busan 46241, South Korea.; Song, M (corresponding author), Korea Inst Mat Sci, Mat Ctr Energy Convergence, Surface Technol Div, 97 Changwondaero, Chang Won 642831, Gyeongnam, South Korea.. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl

A facile and less expensive hole transport material is essential to enhance the power conversion efficiency (PCE) of perovskite solar cells (PSC) without compromising the ambient stability. Here, we designed and synthesized a new class of HTM by introducing donor-pi-acceptor (D-pi-A). The HTM was synthesized by combining the moieties of triphenylamine, biphenyl and oxadiazole derivatives as electron donating, pi-spacer and electron withdrawing moieties, respectively, named 4 ”’-(5-(4-(hexyloxy)phenyl)-1,3,4-oxadiazol-2-yl)-N,N-bis(4-methoxyphenyl)-[1,1′:4′,1 ”:4 ”,1 ”’-quaterphenyl]-4-amine (TPA-BP-OXD). The pi-pi conjugation is increased by introducing the biphenyl pi-spacer. The HTM was terminated with an OXD-based moiety and framed as a D-pi-A-based HTM that trigged improvement in the charge transportation properties due to its pi-pi interactions. We rationally investigated the HTM by characterizing its photophysical, thermal, electrochemical, and charge transport properties. The great features of the HTM stimulated us to explore it on rigid and flexible substrates as a dopant-free HTM in planar inverted-perovskite solar cells (i-PSCs). The device performance in solution processed dopant-free HTM based i-PSC devices on both rigid and flexible substrates showed PCEs of 15.46% and 12.90%, respectively. The hysteresis is negligible, which is one of the most effective results based on a TPA-BP-OXD HTM in planar i-PSCs. The device performance and stability based on the TPA-BP-OXD HTM are better due to higher extraction and transportation of holes from the perovskite material, reduced charge recombination at the interface, and enhanced hydrophobicity of the HTM to compete for a role in enhancing the stability. Overall, our findings demonstrate the potentiality of the TPA-BP-OXD based HTM in planar i-PSCs.

Application In Synthesis of 4,4′-Dibromobiphenyl. Bye, fridends, I hope you can learn more about C12H8Br2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

I found the field of Chemistry very interesting. Saw the article Rigid Multidimensional Alkoxyamines: A Versatile Building Block Library published in 2021. Application In Synthesis of 4,4′-Dibromobiphenyl, Reprint Addresses Brase, S (corresponding author), Karlsruhe Inst Technol KIT, Inst Organ Chem IOC, Fritz Haber Weg 6, D-76131 Karlsruhe, Germany.; Brase, S (corresponding author), Karlsruhe Inst Technol KIT, 3DMM2O Cluster Excellence EXC2082 1390761711, Kaiserstr 12, D-76131 Karlsruhe, Germany.; Brase, S (corresponding author), Karlsruhe Inst Technol KIT, Inst Biol & Chem Syst IBCS FMS, Hermann Von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany.. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl

Since the discovery of the living free-radical polymerization, alkoxyamines were widely used in nitroxide-mediated polymerization (NMP). Most of the known alkoxyamines bear just one functionality with only a few exceptions bearing two or more alkoxyamine units. Herein, we present a library of novel multidimensional alkoxyamines based on commercially available, rigid, aromatic core structures. A versatile approach allows the introduction of different sidechains which have an impact on the steric hindrance and dissociation behavior of the alkoxyamines. The reaction to the alkoxyamines was optimized by implementing a mild and reliable procedure to give all target compounds in high yields. Utilization of biphenyl, p-terphenyl, 1,3,5-triphenylbenzene, tetraphenylethylene, and tetraphenyl-methane results in linear, trigonal, square planar, and tetrahedral shaped alkoxyamines. These building blocks are useful initiators for multifold NMP leading to star-shaped polymers or as a linker for the nitroxide exchange reaction (NER), to obtain dynamic frameworks with a tunable crosslinking degree and self-healing abilities.

Welcome to talk about 92-86-4, If you have any questions, you can contact Matt, Y; Wessely, I; Gramespacher, L; Tsotsalas, M; Brase, S or send Email.. Application In Synthesis of 4,4′-Dibromobiphenyl

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Recently I am researching about SOLUBILITY CONTROLLED PERMEATION; ADDITION-TYPE POLY(NORBORNENE)S; MEMBRANE MATERIALS; POLYMERIZATION; SEPARATION; NORBORNENES; POLYMERS, Saw an article supported by the . Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Sundell, BJ; Lawrence, JA; Harrigan, DJ; Lin, SB; Headrick, TP; O’Brien, JT; Penniman, WF; Sandler, N. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl. Category: benzoxazole

Next-generation membranes use highly engineered polymeric structures with enhanced chain rigidity, yet difficulties in polymerization often limit molecular weights required for film formation. Addition-type polynorbornenes are promising materials for industrial gas separations, but suffer from these limitations owing to endo-exo monomeric mixtures that restrict polymerization sites. In this work, a synthetic approach employing the reductive Mizoroki-Heck reaction resulted in exo-selective products that polymerized up to >99% yields for ROMP and addition-type polymers, achieving molecular weights an order of magnitude higher than addition-type polymers from endo-exo mixtures and impressive side group stereoregularity. Due to this increased macromolecular control, these polynorbornenes demonstrate unique solubility-selective permeation with mixed gas selectivities that exceed commercially used PDMS. In addition to thermal and structural characterization, XRD and computational studies confirmed the results of pure and mixed-gas transport testing, which show highly rigid membranes with favorably disrupted chain packing.

Category: benzoxazole. Welcome to talk about 92-86-4, If you have any questions, you can contact Sundell, BJ; Lawrence, JA; Harrigan, DJ; Lin, SB; Headrick, TP; O’Brien, JT; Penniman, WF; Sandler, N or send Email.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

In 2019 ORGANOMETALLICS published article about RAY STRUCTURAL-CHARACTERIZATION; SOLID-STATE STRUCTURES; BIDENTATE LEWIS-ACIDS; BRIDGED DOUBLE LADDER; CRYSTAL-STRUCTURES; COORDINATION POLYMERS; TRANSESTERIFICATION REACTIONS; MOLECULAR TECTONICS; TETRATIN COMPOUNDS; HYDROGEN-BONDS in [Rojas-Leon, Iran; Vasquez-Rios, Maria G.; Gomez-Jaimes, Gelen; Hopfl, Herbert] Univ Autonoma Estado Morelos, Inst Invest Ciencias Basicas & Aplicadas, Ctr Invest Quim, Ave Univ 1001, Cuernavaca 62209, Morelos, Mexico; [Rojas-Leon, Iran; Alnasr, Hazem; Jurkschat, Klaus] Tech Univ Dortmund, Fak Chem & Chem Biol, D-44221 Dortmund, Germany; [Hernandez-Ahuactzi, Iran F.] Univ Guadalajara, Ctr Univ Tonala, Ave Nuevo Perifer 555, Tonala 45425, Jalisco, Mexico; [Santillan, Rosa] IPN, Dept Quim, Ctr Invest & Estudios Avanzados, Ave Inst Politecn Nacl 2508, Mexico City 07360, DF, Mexico in 2019, Cited 183. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4. Computed Properties of C12H8Br2

Four dinuclear organotin halides of composition XnPh(3-n)SnCH2Si(Me)(2)-C12H8-Si(Me)(2)CH2-SnPh(3-n)Xn (X = Cl, I; n = 1, 2) were prepared and combined in 1:1 stoichiometric reactions with potassium 2,5-pyridinedicarboxylate, 3,5-pyridinedicarboxylate, and piperazine bis-dithiocarbamate, respectively. The reactions yielded a total of five [1 + 1] aggregates with either 21- or 22-membered macrocyclic structures that were fully characterized by elemental analysis, mass spectrometry, IR and NMR (H-1, C-13, Si-29, and Sn-119) spectroscopy, and, in three cases, additionally by single-crystal X-ray diffraction analysis. In solution, the macrocycles exhibit conformational and configurational equilibria being fast on the NMR time scale, which, for one of the macrocycles, were closer examined by variable temperature NMR spectroscopy and DFT calculations.

Welcome to talk about 92-86-4, If you have any questions, you can contact Rojas-Leon, I; Alnasr, H; Jurkschat, K; Vasquez-Rios, MG; Gomez-Jaimes, G; Hopfl, H; Hernandez-Ahuactzi, IF; Santillan, R or send Email.. Computed Properties of C12H8Br2

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Application In Synthesis of 4,4′-Dibromobiphenyl. Rachuta, K; Bayda-Smykaj, M; Koput, J; Hug, GL; Majchrzak, M; Marciniak, B in [Rachuta, Karolina; Bayda-Smykaj, Malgorzata; Koput, Jacek; Majchrzak, Mariusz; Marciniak, Bronislaw] Adam Mickiewicz Univ, Fac Chem, Uniwersytetu Poznanskiego 8, PL-61614 Poznan, Poland; [Bayda-Smykaj, Malgorzata; Marciniak, Bronislaw] Adam Mickiewicz Univ, Ctr Adv Technol, Uniwersytetu Poznanskiego 10, PL-61614 Poznan, Poland; [Hug, Gordon L.] Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA published Why does the presence of silicon atoms improve the emission properties of biphenyl derivatives? – Verification of various hypotheses by experiment and theory in 2019, Cited 35. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

In the course of studying silicon modifications to improve emission properties of commonly used organic compounds, biphenyl with dimethylsilylvinyl groups in the para position (3-Si) was investigated. A comparative study was performed on the exact C-analogue (3-C) and expanded to biphenyl and dimethylbiphenyl to emphasize the general trend observed. Compound 3-Si displayed emission properties clearly different than all of the investigated hydrocarbon compounds, i.e. twice stronger fluorescence (phi(f) = 0.6) and a 3-times larger radiative rate constant as compared to 3-C in acetonitrile. Searching for the source of the unique emission of 3-Si, singlet and triplet processes were investigated for all of the compounds using steady-state and time-resolved methods, and their principal photophysical parameters are reported. Experimental work was supported by the theoretical predictions obtained using the EOM-CCSD method. The results led to the conclusion that the strong emission of 3-Si must be due to silicon’s presence that enhanced intensity borrowing from the strongly allowed S0 -> S2 transition and the larger S1 -> S0 transition moment.

Application In Synthesis of 4,4′-Dibromobiphenyl. Welcome to talk about 92-86-4, If you have any questions, you can contact Rachuta, K; Bayda-Smykaj, M; Koput, J; Hug, GL; Majchrzak, M; Marciniak, B or send Email.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Safety of 4,4′-Dibromobiphenyl. In 2019 ADV ENERGY MATER published article about CONJUGATED MICROPOROUS POLYMERS; MEMBRANE; HEAT in [Mu, Peng; Zhang, Zheng; Bai, Wei; He, Jingxian; Sun, Hanxue; Zhu, Zhaoqi; Liang, Weidong; Li, An] Lanzhou Univ Technol, Coll Petrochem Engn, Dept Chem Engn, Lanzhou 730050, Gansu, Peoples R China in 2019, Cited 38. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

Solar steam generation has been proven to be one of the most efficient approaches for harvesting solar energy for diverse applications such as distillation, desalination, and production of freshwater. Here, the synthesis of monolithic carbon aerogels by facile carbonization of conjugated microporous polymer nanotubes as efficient solar steam generators is reported. The monolithic carbon-aerogel networks consist of randomly aggregated hollow-carbon-nanotubes (HCNTs) with 100-250 nm in diameter and a length of up to several micrometers to form a hierarchically nanoporous network structure. Treatment of the HCNTs aerogels with an ammonium peroxydisulfate/sulfuric acid solution endows their superhydrophilic wettability which is beneficial for rapid transportation of water molecules. In combination with their abundant porosity (92%) with open channel structure, low apparent density (57 mg cm(-3)), high specific surface area (826 m(2) g(-1)), low thermal conductivity (0.192 W m(-1) K-1), and broad light absorption (99%), an exceptionally high conversion efficiency of 86.8% is achieved under 1 sun irradiation, showing great potential as an efficient photothermal material for solar steam generation. The findings may provide a new opportunity for tailored design and creation of new carbon-aerogels-based photothermal materials with adjustable structure, tunable porosity, simple fabrication process, and high solar energy conversion efficiency for solar steam generation.

Welcome to talk about 92-86-4, If you have any questions, you can contact Mu, P; Zhang, Z; Bai, W; He, JX; Sun, HX; Zhu, ZQ; Liang, WD; Li, A or send Email.. Safety of 4,4′-Dibromobiphenyl

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Application In Synthesis of 4,4′-Dibromobiphenyl. Recently I am researching about CARBON NITRIDE; CALCIUM NIOBATE; Z-SCHEME; EVOLUTION; NANOSHEETS; COCATALYST; FRAMEWORKS; SEMICONDUCTORS; PHOTOREDUCTION; HYDROXIDE, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21674125, 21672251, 51761145043]; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB20020000]; Zhengzhou Institute of Technology. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Xiao, WJ; Wang, Y; Wang, WR; Li, J; Wang, JD; Xu, ZW; Li, JJ; Yao, JH; Li, WS. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl

Developing efficient and wide spectrally acting photocatalysts for light-driven hydrogen production from water is highly desirable for solar energy conversion. Herein, diketopyrrolopyrrole (DPP) is used to combine with triphenylamine (TPA), bipyridyl (bdy), and biphenyl (bph) units for construction of conjugated microporous polymer photocatalysts. Although the synthesized two polymers, DPP-bdy-TPA and DPP-bph-TPA, have a similar framework structure, the former bearing a hydrophilic , bipyridyl unit displays much better photocatalytic performance with hydrogen production rates of 6918 and 2780 mu mol g(-1) h(-1) under a full-arc xenon lamp and visible light (>440 nm) illumination, respectively. Moreover, DPP-bdy-TPA has a wide photoaction spectrum with apparent quantum yields of 9.60% at 420 nm, 7.32% at 500 nm, and 0.31% at 600 nm, the so high values rarely achieved by present-known organic semiconductor photocatalysts. These results undoubtedly prove DPP is an excellent building block, and this work well exemplifies its utilization for construction of high-performance photocatalysts.

Application In Synthesis of 4,4′-Dibromobiphenyl. Bye, fridends, I hope you can learn more about C12H8Br2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

SDS of cas: 92-86-4. In 2019 J MATER CHEM C published article about EXCITED-STATE ABSORPTION; OPTICAL-PROPERTIES; SPECTRA; LUMINESCENCE; FLUORESCENCE; POLYPHENYLS; DYNAMICS; SYSTEMS in [Ponomarenko, Sergey A.; Surin, Nikolay M.; Skorotetcky, Maxim S.; Borshchev, Oleg V.; Svidchenko, Evgenia A.] Russian Acad Sci, Enikolopov Inst Synthet Polymer Mat, Profsoyuznaya Str 70, Moscow 117393, Russia; [Ponomarenko, Sergey A.; Pisarev, Sergey A.] Lomonosov Moscow State Univ, Chem Dept, Leninskie Gory 1-3, Moscow 119991, Russia; [Fedorov, Yuriy V.] Russian Acad Sci, Nesmeyanov Inst Organoelement Cpds, Vavilova St 28, Moscow 119991, Russia; [Molins, Francesc; Brixner, Tobias] Univ Wurzburg, Inst Phys & Theoret Chem, D-97074 Wurzburg, Germany; [Brixner, Tobias] Univ Wurzburg, CNC, Theodor Boveri Weg, D-97074 Wurzburg, Germany in 2019, Cited 62. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

We report on the first experimental and theoretical investigations of ultrafast intramolecular energy transfer for a novel class of highly luminescent materials – nanostructured organosilicon luminophores (NOLs). For this purpose we designed, synthesized and investigated a NOL, (POPOP)Si-2(3Ph-EH)(6), consisting of six p-terphenyl (3Ph) donor and 1,4-bis(5-phenyloxazol-2-yl)benzene (POPOP) acceptor luminophores – well-known laser dyes widely used in plastic scintillators as an activator and a spectral shifter, respectively. The NOL shows excellent optical properties – molar absorption coefficient up to 2.6 x 10(5) L mol(-1) cm(-1), photoluminescence quantum yield up to 96% and pseudo Stokes shift of 100 nm. Its intramolecular energy transfer efficiency determined from steady-state optical measurements was found to be 93%, while the excitation lifetime was less than 1 ns. For deeper understanding of the processes of intramolecular energy transfer within NOLs, ultrafast spectroscopy investigations of the NOL, model donor and acceptor luminophores were performed for the first time for this class of compounds. It was found that the time constant of the energy transfer from donor to acceptor luminophores within the NOL is tau(1) = 105 fs, which is significantly faster than the vibrational relaxation within the donor (ca. 400 fs). Based on these findings, a kinetic scheme of the electronic excitation energy deactivation processes in the NOL was developed. The results obtained not only directly prove that the mechanism of energy transfer within the NOLs is based on Forster resonance energy transfer of the excitation energy from donor to acceptor luminophores, but also highlight the advantages of NOLs and NOL-based materials for future photonics applications – fast and efficient plastic scintillators, scintillating fibers and other spectral shifting optical materials.

Welcome to talk about 92-86-4, If you have any questions, you can contact Ponomarenko, SA; Surin, NM; Skorotetcky, MS; Borshchev, OV; Pisarev, SA; Svidchenko, EA; Fedorov, YV; Molins, F; Brixner, T or send Email.. SDS of cas: 92-86-4

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Recently I am researching about PHOTONIC CRYSTALS; GOLD NANORODS; NANOCRYSTALS; PHOTOCONDUCTIVITY; NANOPARTICLES; PATTERNS; LIGANDS; FILMS, Saw an article supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences as part of the Energy Frontier Research Centers program: CSSAS-The Center for the Science of Synthesis Across ScalesUnited States Department of Energy (DOE) [DE-AC0276SF00515]; National Science FoundationNational Science Foundation (NSF) [NNCI-1542101]; University of WashingtonUniversity of Washington; Molecular Engineering & Sciences Institute; Clean Energy Institute; NSFNational Science Foundation (NSF) [DMR-0520547]; European Union’s Horizon 2020 research and innovation program under the SINE2020 project [654000]; Department of Energy, Office of Science, Office of Basic Energy SciencesUnited States Department of Energy (DOE) [DE-AC0276SF00515]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Ritchhart, A; Monahan, M; Mars, J; Toney, MF; De Yoreo, JJ; Cossairt, BM. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl. Recommanded Product: 4,4′-Dibromobiphenyl

Using nanoscale building blocks to construct hierarchical materials is a radical new branch point in materials discovery that promises new structures and emergent functionality. Understanding the design principles that govern nanoparticle assembly is critical to moving this field forward. By exploiting mixed ligand environments to target patchy nanoparticle surfaces, we have demonstrated a novel method of colloidal quantum dot (QD) assembly that gives rise to 2D structures. The equilibration of solutions of spherical and quasi-spherical QDs, including CdS, CdSe, and InP, with 2,2′-bipyridine-5,5′-diacrylic acid resulted in the preferential formation of 2D assemblies over the course of days as determined by transmission electron microscopy analysis. Small-angle X-ray scattering confirms the existence of the QD assemblies in solution. The dependence of the assembly on linker properties (length and rigidity), linker concentration, and total concentration was investigated, together with the data point to a mechanism involving ligand redistribution to create a patchy surface that maximizes the steric repulsion of neighboring QDs. By operating in an underexchanged regime, the arising patchiness results in enthalpically preferred directions of cross-linking that can be accessed by thermal equilibration.

Welcome to talk about 92-86-4, If you have any questions, you can contact Ritchhart, A; Monahan, M; Mars, J; Toney, MF; De Yoreo, JJ; Cossairt, BM or send Email.. Recommanded Product: 4,4′-Dibromobiphenyl

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Rao, JC; Zhao, CY; Wang, YP; Bai, KY; Wang, SM; Ding, JQ; Wang, LX in [Rao, Jiancheng; Zhao, Chenyang; Bai, Keyan; Wang, Shumeng; Ding, Junqiao; Wang, Lixiang] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China; [Rao, Jiancheng; Bai, Keyan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Zhao, Chenyang; Ding, Junqiao; Wang, Lixiang] Univ Sci & Technol China, Hefei 230026, Peoples R China; [Wang, Yanping] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Peoples R China published Achieving Deep-Blue Thermally Activated Delayed Fluorescence in Nondoped Organic Light-Emitting Diodes through a Spiro-Blocking Strategy in 2019, Cited 40. Quality Control of 4,4′-Dibromobiphenyl. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

A deep-blue thermally activated delayed fluorescence (TADF) emitter TXADO-spiro-DMACF has been reported for nondoped organic light-emitting diodes (OLEDs) by integrating an appropriate blocking unit with the donor (D)-acceptor (A)-donor (D)-type TADF emitter via a spiro linkage. Benefiting from the characteristic perpendicular arrangement, the intermolecular interactions are expected to be weakened to some degree. As a result, TXADO-spiro-DMACF shows a very small bathochromic shift of 8 nm associated with a narrowed full width at half maximum of 54 nm on going from solution to the film. The corresponding nondoped device successfully achieves a bright deep-blue emission, revealing Commission Internationale de l’Eclairage coordinates of (0.16, 0.09) and a peak external quantum efficiency of 5.3% (5.3 cd/A, 5.9 lm/W). The results clearly indicate that spiro-blocking is a promising strategy to develop deep-blue TADF emitters capable of nondoped OLEDs.

Quality Control of 4,4′-Dibromobiphenyl. Welcome to talk about 92-86-4, If you have any questions, you can contact Rao, JC; Zhao, CY; Wang, YP; Bai, KY; Wang, SM; Ding, JQ; Wang, LX or send Email.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem