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29871-83-8

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29871-83-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29871-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,8,7 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 29871-83:
(7*2)+(6*9)+(5*8)+(4*7)+(3*1)+(2*8)+(1*3)=158
158 % 10 = 8
So 29871-83-8 is a valid CAS Registry Number.
InChI:InChI=1/C4H5NO2/c1-3-2-4(6)7-5-3/h2,5H,1H3

29871-83-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-methyl-2H-1,2-oxazol-5-one

1.2 Other means of identification

Product number -
Other names 3-Methylisoxazol-5-one

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:29871-83-8 SDS

29871-83-8Upstream product

29871-83-8Relevant articles and documents

Nuclear magnetic resonance study of addition-cyclization involving ethyl thioacetoacetate and α-nucleophiles

Cocivera, Michael,Basu, Soumen,Copp, Leslie,Malatesta, Vincenzo

, p. 629 - 634 (2007/10/02)

Addition of NH2NH2 or NH2OH to ethyl thioacetoacetate to form the corresponding cyclic product, 3-methylpyrazol-5-one or 3-methylisoxazol-5-one proceeds via cyclization of the carbinolamine formed by addition to the β-keto carbon, i.e., cyclization is faster than dehydration of the carbinolamine to form the imine.In contrast the corresponding carbinolamine derived from ethylacetoacetate undergoes dehydration faster than cyclization.By means of 1H nuclear magnetic resonance spectroscopy, it is possible to detect the cyclic carbinolamine as well as another transient and measure their rates of decay.Based on these results, a mechanism is proposed.

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