天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

ChemicalBook--->CAS DataBase List--->55745-70-5

55745-70-5

55745-70-5 Structure

55745-70-5 Structure
IdentificationMore
[Name]

2,3-Dihydrobenzo[b]furan-5-carbaldehyde
[CAS]

55745-70-5
[Synonyms]

2,3-DIBENZO[B]FURAN-5-CARBOXALDEHYDE
2,3-DIHYDRO-1-BENZOFURAN-5-CARBALDEHYDE
2,3-DIHYDROBENZO[B]FURAN-5-CARBALDEHYDE
2,3-DIHYDROBENZO[B]FURAN-5-CARBOXALDEHYDE
2,3-DIHYDROBENZOFURAN-5-CARBALDEHYDE
2,3-DIHYDROBENZOFURAN-5-CARBOXALDEHYDE
AKOS MSC-0772
BUTTPARK 27\04-60
TIMTEC-BB SBB005559
2,3-dihyro-1-benzofuran-5-carbaldehyde
5-Benzofurancarboxaldehyde, 2,3-dihydro-(6CI,9CI)
2,3-Dihydro-5-benzofurancarbox
2,3-dihyro-1-benzofuran-5-carb
2,3-Dihydrobenzo[b]furan-5-carbaldehyde, 95+%
2,3-Dihydro-5-benzofurancarbaldehyde
[EINECS(EC#)]

259-788-1
[Molecular Formula]

C9H8O2
[MDL Number]

MFCD00068058
[Molecular Weight]

148.16
[MOL File]

55745-70-5.mol
Chemical PropertiesBack Directory
[Melting point ]

191~193℃
[Boiling point ]

88-89 °C/0.1 mmHg (lit.)
[density ]

1.177 g/mL at 25 °C(lit.)
[refractive index ]

n20/D 1.6000(lit.)
[Fp ]

>230 °F
[storage temp. ]

2-8°C(protect from light)
[form ]

clear liquid
[color ]

Colorless to Light orange to Yellow
[Detection Methods]

GC
[CAS DataBase Reference]

55745-70-5(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R43:May cause sensitization by skin contact.
[Safety Statements ]

S37/39:Wear suitable gloves and eye/face protection .
[WGK Germany ]

3
[Hazard Note ]

Irritant
[HazardClass ]

IRRITANT
[HS Code ]

29329990
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Sodium hydroxide-->Ethyl acetate-->Diethyl ether-->Tetrahydrofuran-->N,N-Dimethylformamide-->PETROLEUM ETHER-->Phosphorus oxychloride-->Magnesium sulfate-->n-Butyllithium-->Hexane-->1,2-Dibromoethane-->2,3-Dihydrobenzofuran-->2-Bromophenol
[Preparation Products]

1,2,6,7-Tetrahydro-8H-indeno[5,4-b]furan-8-one-->2,3-DIHYDRO-1-BENZOFURAN-5-YLMETHANOL-->2,6,7,8-Tetrahydro-1H-indeno[5,4-b]furan-8-ylethylamine-->2,3-Dihydro-1-benzofuran-5-propanoic acid
Hazard InformationBack Directory
[Chemical Properties]

White to light yellow liquid
[Uses]

Hair dye composition.
[Synthesis]

2,3-Dihydrobenzofuran

496-16-2

N,N-Dimethylformamide

68-12-2

2,3-Dihydrobenzo[b]furan-5-carbaldehyde

55745-70-5

2,3-Dihydrobenzofuran-5-carbaldehyde was synthesized as follows: in a dry reaction flask, 2,3-dihydrobenzofuran (100 g, 0.833 mol) was dissolved in N,N-dimethylformamide (355.0 ml). Under stirring, phosphorus oxychloride (255.58 g, 1.666 mol) was slowly added dropwise, and the reaction temperature was controlled to be maintained between 80°C and 85°C. The reaction mixture was stirred continuously at this temperature for 4 to 5 hours, during which the progress of the reaction was monitored by high performance liquid chromatography (HPLC). Upon completion of the reaction, the mixture was carefully poured into ice water to quench the reaction. Subsequently, the organic layer was separated by extraction with toluene (2000 ml). The organic layer was washed sequentially with 5% sodium bicarbonate solution (500 ml) and 10% brine solution (500 ml) to remove residual acid and DMF.The washed organic layer was subjected to distillation under reduced pressure at 50 °C to 60 °C to remove the solvent to give the crude product. By further purification, 2,3-dihydrobenzofuran-5-carbaldehyde was obtained in 85% to 90% yield and 90% to 92% purity.

[References]

[1] Patent: EP1792899, 2007, A1. Location in patent: Page/Page column 11
[2] Patent: WO2010/41271, 2010, A2. Location in patent: Page/Page column 28
[3] Letters in Drug Design and Discovery, 2013, vol. 10, # 7, p. 561 - 571
[4] Patent: CN102766135, 2017, B. Location in patent: Paragraph 0035-0036
[5] Journal of Medicinal Chemistry, 2002, vol. 45, # 19, p. 4222 - 4239
Spectrum DetailBack Directory
[Spectrum Detail]

2,3-Dihydrobenzo[b]furan-5-carbaldehyde(55745-70-5)1HNMR
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

2,3-Dihydrobenzo[b]furan-5-carbaldehyde, 95%(55745-70-5)
[Sigma Aldrich]

55745-70-5(sigmaaldrich)
55745-70-5 suppliers list
Company Name: Capot Chemical Co.,Ltd.
Tel: +8613336195806 , +8613336195806
Website: www.capot.com
Company Name: Shanghai Daken Advanced Materials Co.,Ltd
Tel: +86-2158073036
Website: www.dakenchem.com/
Company Name: Beijing Cooperate Pharmaceutical Co.,Ltd
Tel: 010-60279497
Website: http://www.cooperate-pharm.com
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: career henan chemical co
Tel: +86-0371-86658258 +8613203830695 , +8613203830695
Website: www.coreychem.com/
Company Name: Shenzhen Nexconn Pharmatechs Ltd
Tel: +86-755-89396905 +86-15013857715 , +86-15013857715
Website: m.approvedhomemanagement.com/ShowSupplierProductsList31188/0_EN.htm
Company Name: Accela ChemBio Inc.
Tel: +1-858-6993322
Website: www.accelachem.com/
Company Name: Alchem Pharmtech,Inc.
Tel: 8485655694
Website: m.approvedhomemanagement.com/ShowSupplierProductsList454175/0_EN.htm
Company Name: Wuhan Chemwish Technology Co., Ltd
Tel: 027-67849912
Website: m.approvedhomemanagement.com/ShowSupplierProductsList485773/0_EN.htm
Company Name: CONIER CHEM AND PHARMA LIMITED
Tel: +8618523575427 , +8618523575427
Website: http://www.conier.com/
Company Name: Fuxin Pharmaceutical
Tel: +86-021-021-50872116 +8613122107989 , +8613122107989
Website: http://www.fuxinpharm.com
Company Name: Neostar United (Changzhou) Industrial Co., Ltd.
Tel: +86-0519-85551759 +8613506123987 , +8613506123987
Website: http://www.neostarunited.com
Company Name: SIMAGCHEM CORP
Tel: +86-5922680277 +86-13806087780 , +86-13806087780
Website: http://www.simagchem.com/
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: +86-0551-65418671 +8618949823763 , +8618949823763
Website: www.tnjchem.com
Company Name: ANHUI WITOP BIOTECH CO., LTD
Tel: +8615255079626 , +8615255079626
Website: m.approvedhomemanagement.com/ShowSupplierProductsList418627/0_EN.htm
Company Name: Dideu Industries Group Limited
Tel: +86-29-89586680 +86-15129568250 , +86-15129568250
Website: https://www.dideu.com
Company Name: AFINE CHEMICALS LIMITED
Tel: +86-0571-85134551
Website: www.afinechem.com/index.html
Tags:55745-70-5 Related Product Information
98-01-1 643-79-8 626-19-7 496-16-2 623-27-8 110-00-9 271-89-6 1029134-73-3 196597-65-6 1221160-70-8 196597-69-0 196597-66-7 76429-73-7 90843-31-5 10035-16-2 55745-70-5

  • 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.