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Butanoic acid, 2,2-dimethyl-3-[(4-nitrophenyl)hydrazono]-, ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

140887-70-3

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140887-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140887-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,8,8 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 140887-70:
(8*1)+(7*4)+(6*0)+(5*8)+(4*8)+(3*7)+(2*7)+(1*0)=143
143 % 10 = 3
So 140887-70-3 is a valid CAS Registry Number.

140887-70-3Relevant academic research and scientific papers

Inter-and intra-molecular cyclisation reactions of azoacetates derived from aryl hydrazones of ethyl acetoacetate and acetoacetanilides

O'Halloran, Neil,James, John P.,Downey, Carol A.,O'Malley, Patrick,Duff, Thomas,Bertrand, Samuel

experimental part, p. 2681 - 2701 (2011/04/16)

The base induced cyclisations of azoacetates to azetidinones were investigated. In addition to the isolation of the desired products, it was found that 2-iminopyrrolidine-5-one derivatives as well as N-acyl hydrazides could be isolated when metal cyanides were employed as base. These entities were further modified to form pyrrolidine-2,5-diones and diazetidinones respectively. The Japan Institute of Heterocyclic Chemistry.

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