午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

ChemicalBook--->CAS DataBase List--->190723-12-7

190723-12-7

190723-12-7 Structure

190723-12-7 Structure
IdentificationBack Directory
[Name]

2,5-DibroMothiophene-3,4-dicarboxylic acid
[CAS]

190723-12-7
[Synonyms]

EA131
2,5-Dibromo-3,4-dicarboxythiophene
2,5-DibroMothiophene-3,4-dicarboxylic acid
2,5-Dibromo-3,4-thiophenedicarboxylic acid
3,4-Thiophenedicarboxylic acid, 2,5-dibromo-
2,5-DibroMothiophene-3,4-dicarboxylic acid ISO 9001:2015 REACH
3,4-Thiophenedicarboxylicacid,2,5-dibromo-,2,5-Dibromo-3,4-thiophenedicarboxylicacid
[Molecular Formula]

C6H2Br2O4S
[MDL Number]

MFCD08695787
[MOL File]

190723-12-7.mol
[Molecular Weight]

329.95
Chemical PropertiesBack Directory
[Boiling point ]

432.9±45.0 °C(Predicted)
[density ]

2.420±0.06 g/cm3(Predicted)
[storage temp. ]

Keep in dark place,Inert atmosphere,2-8°C
[pka]

2.62±0.50(Predicted)
[Appearance]

White to yellow Solid
[InChI]

InChI=1S/C6H2Br2O4S/c7-3-1(5(9)10)2(6(11)12)4(8)13-3/h(H,9,10)(H,11,12)
[InChIKey]

ZZYYIZHQMCEKLG-UHFFFAOYSA-N
[SMILES]

C1(Br)SC(Br)=C(C(O)=O)C=1C(O)=O
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H315-H319-H335
[Precautionary statements ]

P261-P305+P351+P338
Hazard InformationBack Directory
[Synthesis]

Thiophene-3,4-dicarboxylic acid

4282-29-5

2,5-DibroMothiophene-3,4-dicarboxylic acid

190723-12-7

General procedure for the synthesis of 2,5-dibromothiophene-3,4-dicarboxylic acid from 3,4-thiophene dicarboxylic acid: 3,4-thiophene dicarboxylic acid (5 g, 29.04 mmol) and glacial acetic acid (40 mL) were added sequentially to a 100 mL single-necked round-bottom flask. Liquid bromine (8.9 mL, 174.24 mmol) was added to a 25 mL constant pressure dropping funnel at room temperature. The liquid bromine was slowly added dropwise to the reaction flask and the reaction continued to be stirred for 12 hours after the drop was completed. Upon completion of the reaction, the reaction solution was slowly poured into 500 mL of saturated sodium bisulfite solution and stirred until a beige solid precipitated. The solid product was collected by filtration under reduced pressure and washed with appropriate amount of cold water, and dried to obtain the beige solid product 2,5-dibromothiophene-3,4-dicarboxylic acid (8.2 g, 85.6% yield).

[References]

[1] Patent: CN108250222, 2018, A. Location in patent: Paragraph 0059; 0062; 0063
[2] Journal of the American Chemical Society, 1997, vol. 119, # 41, p. 9624 - 9631
[3] Chemical Communications, 2011, vol. 47, # 40, p. 11345 - 11347
[4] Journal of Polymer Science, Part A: Polymer Chemistry, 2014, vol. 52, # 14, p. 1929 - 1940
[5] Journal of Materials Chemistry C, 2018, vol. 6, # 3, p. 500 - 511
190723-12-7 suppliers list
Company Name: Hebei Mujin Biotechnology Co.,Ltd
Tel: +86-13288715578
Website:
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512 , +86-19937530512
Website: https://www.tianfuchem.com/
Company Name: ATK CHEMICAL COMPANY LIMITED
Tel: +undefined-21-51877795
Website: www.atkchemical.com
Company Name: Jilin Chinese Academy of Sciences - Yanshen Technology Co., Ltd.
Tel: 0431-80514535 13634302652
Website: www.en.chemextension.com
Company Name: career henan chemical co
Tel: +86-0371-86658258 +8613203830695 , +8613203830695
Website: www.coreychem.com
Company Name: CHEMSOON CO.,LTD.
Tel: +8613761723174 , +8613761723174
Website: http://www.chemsoon.com/
Company Name: Shanghai Daeyeon Chemicals Co., Ltd
Tel: 021-64478606 +8615900664856 , +8615900664856
Website: http://www.shdaeyeonchem.com/
Company Name: Dideu Industries Group Limited
Tel: +86-29-89586680 +86-15129568250 , +86-15129568250
Website: https://www.dideu.com
Company Name: Hefei Hirisun Pharmatech Co., Ltd
Tel: +8615056975894 , +8615056975894
Website: www.hirisunpharm.com
Company Name: CD Chemical Group Limited
Tel: +8615986615575 , +8615986615575
Website: http://www.codchem.com/
Company Name: Henan Alfa Chemical Co., Ltd
Tel: +8615838112936 , +8615838112936
Website: www.yuhua99.com/manufacturer/henan-alfa-chemical-570/
Company Name: Suzhou Laing Biotechnology Co.,Ltd
Tel: +86-13004516015 +86-18149392822 , +86-18149392822
Website: http://en.laingbiotec.com/
Company Name: Nanjing Yushan Wanfang Biotechnology Co., Ltd.
Tel: +86-025-84918180 +86-18014482516 , +86-18014482516
Website: http://www.njwfsw.com/IndexEN.htm
Company Name: Nanjing Doge Biomedical Technology Co., Ltd
Tel: +86-25-58227606 +86-15305155328 , +86-15305155328
Website: https://www.dogechemical.com
Company Name: LEAP CHEM CO., LTD.
Tel: +86-852-30606658
Website: www.leapchem.com
Company Name: Coresyn Pharmatech Co., Ltd.
Tel: +86-571-86626709 +86-18157142896 , +86-18157142896
Website: http://www.coresyn.com/
Company Name: Hebei Chuanghai Biotechnology Co., Ltd
Tel: +8615531151365 , +8615531151365
Website: www.chuanghaibio.com
Company Name: SUZHOU SENFEIDA CHEMICAL CO.,LTD
Tel: +86-0512-83500002 +8618662433356 , +8618662433356
Website: www.sfdchem.com/
Tags:190723-12-7 Related Product Information
91-64-5 5414-19-7 139631-62-2 111-44-4 1015423-45-6 36217-24-0 154350-29-5 4282-29-5 18853-32-2 6007-85-8

  • HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase | Privacy | Terms | About Us
  • All products displayed on this website are only for non-medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.
    According to relevant laws and regulations and the regulations of this website, units or individuals who purchase hazardous materials should obtain valid qualifications and qualification conditions.
  • Copyright © 2023 ChemicalBook All rights reserved.