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720-43-4

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720-43-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 720-43-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 720-43:
(5*7)+(4*2)+(3*0)+(2*4)+(1*3)=54
54 % 10 = 4
So 720-43-4 is a valid CAS Registry Number.

720-43-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-fluoro-1,2-diphenylethanone

1.2 Other means of identification

Product number -
Other names Ethanone,2-fluoro-1,2-diphenyl

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:720-43-4 SDS

720-43-4Relevant articles and documents

FLUORINATING AGENT AND METHOD FOR PRODUCING FLUORINE-CONTAINING COMPOUNDS

-

Paragraph 0114; 0116; 0141-0142; 0145-0148, (2022/04/06)

The present invention provides the compound represented in general formula (A1) [Ar1 is a C6-14 aryl group or a C5-14 nitrogen-containing heteroaryl group, substituted with at least two electron-attracting groups; R1 is a C1-30 alkyl group, a C6-14 aryl group, or a C5-14 nitrogen-containing heteroaryl group; the electron-attracting group is a halogen atom, a trihalomethyl group, a cyano group, a nitro group, -CO2R or -CO2N(R)2 (the Rs independently represent C1-30 alkyl groups)].

Bench-Stable Electrophilic Fluorinating Reagents for Highly Selective Mono- and Difluorination of Silyl Enol Ethers

Adachi, Akiya,Aikawa, Kohsuke,Ishibashi, Yuichiro,Nozaki, Kyoko,Okazoe, Takashi

supporting information, p. 11919 - 11925 (2021/07/02)

Efficient methods for the synthesis of fluorinated compounds have been intensively studied, recently. Development of practical fluorinating reagents is indispensable for this purpose. Herein, bench-stable electrophilic fluorinating reagents were synthesized as N-fluorobenzenesulfonimide (NFSI) substitutes. Reagents obtained by replacing one of the NFSI sulfonyl groups with an acyl group led to the highly selective monofluorination of silyl enol ethers with suppression of undesired overreaction, that is, difluorination. On the other hand, reagents bearing electron-withdrawing substituents at NFSI benzenesulfonyl groups efficiently facilitated the difluorination of silyl enol ethers under base-free conditions. Thus, both mono- and difluorinated target materials were prepared from the same substrate.

Preparation method of monofluorobromoacetone derivative

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Paragraph 0025-0033, (2020/06/16)

The invention relates to a preparation method of a monofluorobromoacetone derivative. The method comprises the following steps: mixing a compound as shown in a formula (1) with a catalyst, a ligand, alkali and a solvent, performing reacting with a compound as shown in a formula (2) under the protection of N2 until the reaction is complete, extracting and separating the obtained reaction solution to obtain the monofluorobromoacetone derivative as shown in a formula (3), wherein R1 is phenyl, substituted phenyl or heterocyclic ring; R2 is phenyl or substituted phenyl. Compared with the prior art, the method has the advantages of high reaction selectivity, milder conditions and shorter reaction time.

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