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101924-53-2

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101924-53-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101924-53-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,9,2 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 101924-53:
(8*1)+(7*0)+(6*1)+(5*9)+(4*2)+(3*4)+(2*5)+(1*3)=92
92 % 10 = 2
So 101924-53-2 is a valid CAS Registry Number.

101924-53-2Relevant articles and documents

An improved synthesis of aziridine-2,3-dicarboxylates via azido alcohols - Epimerization studies

Breuning, Alexander,Vicik, Radim,Schirmeister, Tanja

, p. 3301 - 3312 (2003)

The reasons for epimerization of 3-azido-2-hydroxysuccinates observed during the ring opening of epoxides or cyclic sulfites with sodium azide is now clarified. It is caused by the high acidity of the proton at the 3-position. This is proven by a proton deuterium exchange in assays with either D 2O or DCl containing solvents. The anti-3-azido-2-hydroxysuccinates serve as intermediates for enantiomerically pure trans-aziridine-2,3- dicarboxylates for which an optimized synthetic pathway is presented. The first example of an enantiomerically pure mixed diester of the aziridine-2,3- dicarboxylic acid the synthesis of the allyl ethyl ester is reported herein.

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