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840-44-8

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840-44-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 840-44-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 840-44:
(5*8)+(4*4)+(3*0)+(2*4)+(1*4)=68
68 % 10 = 8
So 840-44-8 is a valid CAS Registry Number.

840-44-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name ethyl 2,3-dibromo-3-(4-nitrophenyl)propanoate

1.2 Other means of identification

Product number -
Other names 2,3-Dibrom-3-(4-nitro-phenyl)-propionsaeure-aethylester

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:840-44-8 SDS

840-44-8Relevant articles and documents

Organocatalysis as a safe practical method for the stereospecific dibromination of unsaturated compounds

Hernandez-Torres, Gloria,Tan, Bin,Barbas, Carlos F.

supporting information; experimental part, p. 1858 - 1861 (2012/06/18)

Organocatalytic stereospecific dibromination of a wide variety of functionalized alkenes was achieved using a stable, inexpensive halogen source, 1,3-dibromo 5,5-dimethylhydantoin, and a simple thiourea catalyst at room temperature. The presence of a tertiary amine enhanced the rate of the dibromination reaction, and yields were good in various solvents, including aqueous solvents. The procedure was extended to alkynes and aromatic rings and to dichlorination reactions by using the 1,3-dichloro hydantoin derivative.

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