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1235889-83-4

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1235889-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1235889-83-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,5,8,8 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1235889-83:
(9*1)+(8*2)+(7*3)+(6*5)+(5*8)+(4*8)+(3*9)+(2*8)+(1*3)=194
194 % 10 = 4
So 1235889-83-4 is a valid CAS Registry Number.

1235889-83-4Relevant articles and documents

Dynamic kinetic asymmetric synthesis of substituted pyrrolidines from racemic cyclopropanes and aldimines: Reaction development and mechanistic insights

Parsons, Andrew T.,Smith, Austin G.,Neel, Andrew J.,Johnson, Jeffrey S.

supporting information; experimental part, p. 9688 - 9692 (2010/09/06)

An enantioselective preparation of 2,5-cis-disubstituted pyrrolidines has been achieved via a dynamic kinetic asymmetric transformation (DyKAT) of racemic donor-acceptor cyclopropanes and (E)-aldimines. Mechanistic studies suggest that isomerization of the aldimine or resultant iminium to the Z geometry is not a pathway that furnishes the observed 2,5-cis-disubstituted products.

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