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721-89-1

721-89-1

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721-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 721-89-1 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 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 721-89:
(5*7)+(4*2)+(3*1)+(2*8)+(1*9)=71
71 % 10 = 1
So 721-89-1 is a valid CAS Registry Number.

721-89-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name (2Z)-N-(4-Bromophenyl)-2-(hydroxyimino)-3-oxobutanamide

1.2 Other means of identification

Product number -
Other names Hydroxyimino(2-quinolinyl)acetonitrile

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:721-89-1 SDS

721-89-1Relevant articles and documents

Straightforward access to (imidazol-2-yl)acetates by reaction of 2-unsubstituted imidazole 3-oxides with dimethyl acetylenedicarboxylate

Mlostoń, Grzegorz,Jasiński, Marcin,Heimgartner, Heinz

, p. 2542 - 2547 (2011/05/16)

A new method for the preparation of 1,4,5-trisubstituted (imidazol-2-yl)acetates, based on the reaction of the corresponding imidazole 3-oxides with dimethyl acetylenedicarboxylate (DMAD) is described. Formation of the products is rationalized by a formal 1,3-dipolar cycloaddition and subsequent oxaloyl cleavage. 1,4,5-Trisubstituted imidazole 3-oxides bearing an electron-withdrawing substituent at C(4), easily react with dimethyl acetylenedicarboxylate (DMAD), yielding the corresponding oxobutanoates, which subsequently, in a one-pot procedure undergo hydrolysis through an "oxaloyl cleavage" mode. New (imidazol-2-yl)acetates were isolated in high yields. Copyright

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