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740844-68-2

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740844-68-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 740844-68-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,0,8,4 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 740844-68:
(8*7)+(7*4)+(6*0)+(5*8)+(4*4)+(3*4)+(2*6)+(1*8)=172
172 % 10 = 2
So 740844-68-2 is a valid CAS Registry Number.

740844-68-2Downstream Products

740844-68-2Relevant articles and documents

Nitrobenzylation of α-carbonyl ester derivatives using TDAE approach

Giuglio-Tonolo, Gamal,Terme, Thierry,Médebielle, Maurice,Vanelle, Patrice

, p. 5121 - 5124 (2007/10/03)

A series of 2-hydroxy-propionic acid ethyl ester derivatives was prepared in good yields by reaction of o- and p-nitrobenzyl chlorides (1, 8) with various α-carbonyl esters in presence of tetrakis(dimethylamino)ethylene (TDAE). This reaction was generalized to α-ketolactam and α-ketomalonate.

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