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57294-40-3

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57294-40-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57294-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,9 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57294-40:
(7*5)+(6*7)+(5*2)+(4*9)+(3*4)+(2*4)+(1*0)=143
143 % 10 = 3
So 57294-40-3 is a valid CAS Registry Number.

57294-40-3Downstream Products

57294-40-3Relevant articles and documents

A KINETIC STUDY OF PHOSPHINIC CARBOXYLIC MIXED ANHYDRIDES

Ramage, Robert,Atrash, Butrus,Hopton, David,Parrott, Maxwell J.

, p. 1617 - 1622 (2007/10/02)

Using 32.4 MHz (31)P n.m.r. spectroscopy, disproportionation of a series of phosphinic carboxylic mixed anhydrides derived from protected α-amino acids has been studied both as a function of the substituents at phosphorus and structure of the α-amino acid being activated.It was found that the rates of disproportionation were insignificant from a preparative aspect compared with aminolysis at 0 deg C.

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