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2991-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2991-99-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2991-99:
(6*2)+(5*9)+(4*9)+(3*1)+(2*9)+(1*9)=123
123 % 10 = 3
So 2991-99-3 is a valid CAS Registry Number.

2991-99-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name	2,2-difluoro-1-(thiophen-2-yl)ethan-1-one

1.2 Other means of identification

Product number	-
Other names	2,2-Difluoro-1-thiophen-2-yl-ethanone

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:2991-99-3 SDS

2991-99-3Upstream product

2991-99-3Downstream Products

2991-99-3Relevant articles and documents

-

Zaitseva,N.A. et al.

, (1961)

Biocatalytic Strategy for the Highly Stereoselective Synthesis of CHF2-Containing Trisubstituted Cyclopropanes

Carminati, Daniela M.,Decaens, Jonathan,Couve-Bonnaire, Samuel,Jubault, Philippe,Fasan, Rudi

supporting information, p. 7072 - 7076 (2021/02/27)

The difluoromethyl (CHF2) group has attracted significant attention in drug discovery and development efforts, owing to its ability to serve as fluorinated bioisostere of methyl, hydroxyl, and thiol groups. Herein, we report an efficient biocat

Synthesis of Difluoromethyl Ketones from Weinreb Amides, and Tandem Addition/Cyclization of o-Alkynylaryl Weinreb Amides

Phetcharawetch, Jongkonporn,Betterley, Nolan M.,Soorukram, Darunee,Pohmakotr, Manat,Reutrakul, Vichai,Kuhakarn, Chutima

supporting information, p. 6840 - 6850 (2017/12/26)

[Difluoro(phenylsulfanyl)methyl]trimethylsilane (PhSCF2SiMe3) underwent a fluoride-induced nucleophilic addition to the carbonyl group of Weinreb amides to provide the corresponding difluoro(phenylsulfanyl)methyl ketones. These were

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CAS

2991-99-3