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205442-98-4

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205442-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205442-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,4,4 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 205442-98:
(8*2)+(7*0)+(6*5)+(5*4)+(4*4)+(3*2)+(2*9)+(1*8)=114
114 % 10 = 4
So 205442-98-4 is a valid CAS Registry Number.

205442-98-4Downstream Products

205442-98-4Relevant articles and documents

A short asymmetric synthesis of 2,5-disubstituted pyrrolidines

Katritzky, Alan R.,Cui, Xi-Lin,Yang, Baozhen,Steel, Peter J.

, p. 1697 - 1700 (2007/10/03)

A novel approach to chiral 2,5-disubstituted pyrrolidines, starting from chiral 2-phenyl-glycimol, 1,5-dimethoxytetrahydrofuran, and benzotriazole, involves the diastereoselective substitution by Grignard reagents of a benzotriazolyl group in a crystalline intermediate obtained in high yield.

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