Category: 92-86-4

Safety of 4,4′-Dibromobiphenyl. In 2019 CAN J CHEM published article about LIGHT-EMITTING-DIODES; HOLE-TRANSPORT MATERIALS; CHARGE INJECTION EFFICIENCY; LAYER INTERFACIAL STABILITY; PEROVSKITE SOLAR-CELLS; CONDUCTING POLYMER; HIGHLY EFFICIENT; LINKING; REDUCTION; ALCOHOLS in [Kamino, Brett A.; Szawiola, Anjuli M.; Plint, Trevor; Bender, Timothy P.] Univ Toronto, Dept Chem Engn & Appl Chem, 200 Coll St, Toronto, ON M5S 3E5, Canada; [Szawiola, Anjuli M.; Bender, Timothy P.] Univ Toronto, Dept Chem, 80 St George St, Toronto, ON M5S 3H4, Canada; [Bender, Timothy P.] Univ Toronto, Dept Mat Sci & Engn, 184 Coll St, Toronto, ON M5S 3E4, Canada; CSEM, Rue Jaquet Droz 1, CH-2002 Neuchatel, Switzerland in 2019, Cited 90. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

Cross-linked triarylamine-siloxane hybrid thin film have been formed using Piers-Rubinsztajn chemistry. Key to this approach was the use of a ring-opening reaction to prevent the evolution of volatile small molecules. A representative cyclic ether containing biphenyl triarylamine compound was synthesized and on ring-opening was shown to form a smooth, glassy, and electroactive films by cross-linking with tetrakis(dimethylsiloxy) silane (QM*4). It was found that the films were electrochemically active with low glass transition temperatures. Cross-linked films were incorporated into organic light emitting diodes (OLEDs) under various conditions and functionality within OLEDs was confirmed. Finally, the resistance of the system to dissolution (orthogonality) was considered by casting F8T2, a p-type emitting polymer, from solution on top of the cross-linked film, which formed a working OLED.

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

Name: 4,4′-Dibromobiphenyl. I found the field of Chemistry; Science & Technology – Other Topics very interesting. Saw the article Triphenylamine based conjugated microporous polymers for selective photoreduction of CO2 to CO under visible light published in 2019, Reprint Addresses Liu, B (corresponding author), Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore.; Li, SZ (corresponding author), Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore.. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl.

Organic pi-conjugated polymers (CPs) have been intensively explored for a variety of critical photocatalytic applications in the past few years. Nevertheless, CPs for efficient CO2 photoreduction have been rarely reported, which is mainly due to the lack of suitable polymers with sufficient solar light harvesting ability, appropriate energy level alignment and good activity and selectivity in multi-electron-transfer photoreduction of CO2 reaction. We report here the rational design and synthesis of two novel triphenylamine (TPA) based conjugated microporous polymers (CMPs), which can efficiently catalyze the reduction of CO2 to CO using water vapor as an electron donor under ambient conditions without adding any co-catalyst. Nearly 100% selectivity and a high CO production rate of 37.15 mu mol h(-1) g(-1) are obtained for OXD-TPA, which is significantly better than that for BP-TPA (0.9 mu mol h(-1) g(-1)) as a result of co-monomer change from biphenyl to 2,5-diphenyl-1,3,4-oxadiazole. This difference could be mainly ascribed to the synergistic effect of a decreased optical band gap, improved interface charge transfer and increased CO2 uptake for OXD-TPA. This contribution is expected to spur further interest in the rational design of porous conjugated polymers for CO2 photoreduction.

Name: 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

An article Why does the presence of silicon atoms improve the emission properties of biphenyl derivatives? – Verification of various hypotheses by experiment and theory WOS:000487555400063 published article about ELECTRONIC RELAXATION PROCESSES; ORGANOSILICON COMPOUNDS; MOLECULAR-CONFORMATION; FLUORESCENCE; ABSORPTION; ROTATION; SPECTRA 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 in 2019, Cited 35. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4. Name: 4,4′-Dibromobiphenyl

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.

Name: 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.

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Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

HPLC of Formula: C12H8Br2. Recently I am researching about TRANSITION-METAL NANOPARTICLES; ONE-POT SYNTHESIS; C-C; PALLADIUM CATALYSTS; FEPT NANOPARTICLES; SUZUKI-MIYAURA; ARYL BROMIDES; ULLMANN; SONOGASHIRA; ACTIVATION, Saw an article supported by the Research Council of the Tarbiat Modares University; Iran National Science Foundation (INSF)Iran National Science Foundation (INSF) [94028939]. Published in ELSEVIER SCIENCE SA in LAUSANNE ,Authors: Yavari, I; Mobaraki, A; Hosseinzadeh, Z; Sakhaee, N. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl

This study intends to design and prepare a new magnetic copper catalyst and its activity was assessed by carbon-carbon coupling reactions. For this purpose, 1-[3-(trimethoxysilyl) propyl] urea (TMSPU), hydrazine and CuI were used sequentially to modify Fe3O4@SiO2 core-shell magnetic nanoparticles to obtain an efficient magnetic transition metal catalyst. Various analytical techniques were used to characterize the catalyst to show that the achieved structure and its properties are well-suited for coupling reactions. Finally, Mizoroki-Heck and Ullmann coupling reactions were performed using Fe3O4@SiO2@PrNCu catalyst. The new catalyst offer simple synthetic procedure, convenient use for routine casework and low price. The Fe3O4@SiO2@PrNCu catalyst was easily separated by means of a permanent and ordinary magnet and the recovered catalyst was reused in six cycles without any significant loss of activity. (c) 2019 Elsevier B.V. All rights reserved.

Welcome to talk about 92-86-4, If you have any questions, you can contact Yavari, I; Mobaraki, A; Hosseinzadeh, Z; Sakhaee, N or send Email.. HPLC of Formula: C12H8Br2

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

An article Ultrafast intramolecular energy transfer in a nanostructured organosilicon luminophore based on p-terphenyl and 1,4-bis(5-phenyloxazol-2-yl)benzene WOS:000506638900020 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. Product Details 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.

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

In 2019 CHEMISTRYSELECT published article about ACTIVATED DELAYED FLUORESCENCE; INTRAMOLECULAR CHARGE-TRANSFER; SINGLET OXYGEN; EMISSION; DERIVATIVES; ACRIDINONE; ACRIDANE; CRYSTAL; COLOR in [Liu, Renfei; Gao, Hongshuai; Zhou, Leyong; Ji, Yongxin; Zhang, Gang] Nanjing Forestry Univ, Coll Chem Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Pr, Nanjing 210037, Jiangsu, Peoples R China in 2019, Cited 47. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4. Computed Properties of C12H8Br2

A variety of N-substituted acridone derivatives were synthesized to make a comparison of their properties according to the number of acridone unit and the nature of substituent. The spectroscopic and electrochemical investigations show that the properties of N-substituted acridone derivatives are substituent-dependent. With benzene, biphenyl, fluorene and carbazole as linkers, the acridone derivatives demonstrate the properties of acridone itself due to a very weak intramolecular charge transfer (ICT) between acridone and the linker. However, significant ICT process is observed when the electron withdrawing groups are involved to form the donor-acceptor systems with acridone as the electron donating groups, which is different from the previously reported results of which acridone is usually used as an electron acceptor. Moreover, thermally activated delayed fluorescence (TADF) is observed with anthraquinone as linker. The theoretical calculations reveal that the N-substitutions have more influences on the locations and energy levels of the LUMOs than those of the HOMOs.

Computed Properties of C12H8Br2. 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

An article In Situ Generation of Azonia-Containing Polyelectrolytes for Luminescent Photopatterning and Superbug Killing WOS:000476684700041 published article about CONJUGATED POLYELECTROLYTES; SYNTHETIC POLYELECTROLYTES; METATHESIS; ANNULATION; ACID; EFFICIENCY; POLYMERS; CATIONS in [Liu, Xiaolin; Han, Ting; Qiu, Zijie; Li, Yuanyuan; Li, Qiyao; Hu, Yubing; Liu, Zhiyang; Lam, Jacky W. Y.; Tang, Ben Zhong] Hong Kong Univ Sci & Technol, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Dept Chem & Biol Engn,Kowloon, Inst Mol Funct Mat,Inst Adv Study,Dept Chem,Hong, Clear Water Bay, Hong Kong, Peoples R China; [Li, Mengge; Cao, Bing; Hu, Xianglong] South China Normal Univ, Coll Biophoton, Minist Educ, Key Lab Laser Life Sci, Guangzhou 510631, Guangdong, Peoples R China; [Li, Mengge; Cao, Bing; Hu, Xianglong] South China Normal Univ, Coll Biophoton, Inst Laser Life Sci, Guangzhou 510631, Guangdong, Peoples R China; [Liu, Xiaolin; Han, Ting; Qiu, Zijie; Li, Yuanyuan; Li, Qiyao; Hu, Yubing; Liu, Zhiyang; Lam, Jacky W. Y.; Tang, Ben Zhong] HKUST Shenzhen Res Inst, 9 Yuexing 1st Rd,South Area,Hitech Pk, Shenzhen 518057, Peoples R China; [Tang, Ben Zhong] South China Univ Technol, State Key Lab Luminescent Mat & Devices, SCUT HKUST Joint Res Inst, Ctr Aggregat Induced Emiss, Guangzhou 510640, Guangdong, Peoples R China in 2019, Cited 63. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4. COA of Formula: C12H8Br2

Polyelectrolytes play an important role in both natural biological systems and human society, and their synthesis, functional exploration, and profound application are thus essential for biomimicry and creating new materials. In this study, we developed an efficient synthetic methodology for in situ generation of azonia-containing polyelectrolytes in a one-pot manner by using readily accessible nonionic reactant in the presence of commercially available cheap ionic species. The resulting polyelectrolytes are emissive in the solid state and can readily form luminescent photopatterns with different colors. The azonia-containing polyelectrolytes possess extraordinary potency of reactive oxygen species (ROS) generation, enabling them to impressively kill methicillin-resistant Staphylococcus aureus (MRSA), a drug resistant superbug, both in vitro and in vivo.

Welcome to talk about 92-86-4, If you have any questions, you can contact Liu, XL; Li, MG; Han, T; Cao, B; Qiu, ZJ; Li, YY; Li, QY; Hu, YB; Liu, ZY; Lam, JWY; Hu, XL; Tang, BZ or send Email.. COA of Formula: C12H8Br2

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

Recommanded Product: 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.

Recommanded Product: 92-86-4. 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.

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

Quality Control of 4,4′-Dibromobiphenyl. I found the field of Chemistry very interesting. Saw the article Benchtop Biaryl Coupling Using Pd/Cu Cocatalysis: Application to the Synthesis of Conjugated Polymers published in 2021, Reprint Addresses Anslyn, EV (corresponding author), Univ Texas Austin, Dept Chem, Austin, TX 78712 USA.; Nelson, TL (corresponding author), Oklahoma State Univ, Dept Chem, Stillwater, OK 74078 USA.; Lynd, NA (corresponding author), Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA.. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl.

Typically, Suzuki couplings used in polymerizations are performed at raised temperatures in inert atmospheres. As a result, the synthesis of aromatic materials that utilize this chemistry often demands expensive and specialized equipment on an industrial scale. Herein, we describe a bimetallic methodology that exploits the distinct reactivities of palladium and copper to perform high yielding aryl-aryl dimerizations and polymerizations that can be performed on a benchtop under ambient conditions. These couplings are facile and can be performed by simple mixing in the open vessel. To demonstrate the utility of this method in the context of polymer synthesis: polyfluorene, polycarbazole, polysilafluorene, and poly(6,12-dihydrodithienoindacenodithiophene) were created at ambient temperature and open to air.

Quality Control of 4,4′-Dibromobiphenyl. Welcome to talk about 92-86-4, If you have any questions, you can contact Minus, MB; Moor, SR; Pary, FF; Nirmani, LPT; Chwatko, M; Okeke, B; Singleton, JE; Nelson, TL; Lynd, NA; Anslyn, EV or send Email.

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

Recommanded Product: 4,4′-Dibromobiphenyl. Biswas, K; Chattopadhyay, S; Jing, YK; Che, RC; De, G; Basu, B; Zhao, DY in [Biswas, Kinkar; Basu, Basudeb] North Bengal Univ, Dept Chem, Darjeeling 734013, India; [Chattopadhyay, Shreyasi; De, Goutam] CSIR, Cent Glass & Ceram Res Inst, 196 Raja SC Mullick Rd, Kolkata 700032, India; [Jing, Yunke; Che, Renchao; Zhao, Dongyuan] Fudan Univ, Dept Chem, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China; [Jing, Yunke; Che, Renchao; Zhao, Dongyuan] Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China; [De, Goutam] Inst Nano Sci & Technol, Mohali 166062, Punjab, India; [Basu, Basudeb] Raiganj Univ, Raiganj 733134, India published Polyionic Resin Supported Pd/Fe(2)O(3)Nanohybrids for Catalytic Hydrodehalogenation: Improved and Versatile Remediation for Toxic Pollutants in 2019, Cited 58. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.

A series of Pd/Fe2O3 nanohybrids with low metal content supported with Amberlite resin formate (Pd/Fe2O3@ARF) was prepared and characterized by FTIR, XRD, XPS, EELS, SEM-EDAX, and HRTEM. The coexistence of mainly crystalline Pd and Fe2O3 nanoparticles (NPs) of average size similar to 4-5 nm in the resin matrix was confirmed. These nanohybrids were used for hydrodehalogenation of polyhaloar-omatics using NaBH4 as a reducing agent in water. Notably, the composite Pd/Fe2O3@ARF-110 exhibits excellent catalytic performance in the hydrodehalogenation of different haloar-omatics. High TOF (in comparison to other related heterogeneous catalysts), recydability, and chemoselectivity between halide and C = C bond make this nanohybrid catalyst very attractive for the degradation of persistent organic pollutants originated from industries. The experimental observations and other analytical studies suggest that the enhanced catalytic activity could be due to strong interactions between Fe2O3 and Pd NPs that facilitate the cleavage of B-H bond and subsequent hydride generation.

Welcome to talk about 92-86-4, If you have any questions, you can contact Biswas, K; Chattopadhyay, S; Jing, YK; Che, RC; De, G; Basu, B; Zhao, DY or send Email.. Recommanded Product: 4,4′-Dibromobiphenyl

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