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216667-19-5

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216667-19-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 216667-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,6,6 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 216667-19:
(8*2)+(7*1)+(6*6)+(5*6)+(4*6)+(3*7)+(2*1)+(1*9)=145
145 % 10 = 5
So 216667-19-5 is a valid CAS Registry Number.

216667-19-5Relevant articles and documents

Structure-selectivity relationship in alkyllithium-aldehyde condensations using 3-aminopyrrolidine lithium amides as chiral auxiliaries

Corruble, Aline,Valnot, Jean-Yves,Maddaluno, Jacques,Duhamel, Pierre

, p. 8266 - 8275 (1998)

A nonracemizing route to a set of chiral 3-aminopyrrolidines, based on 4-hydroxy-(L)-proline, is described. The induction potential of the lithium amides derived from these diamines has then been investigated in the asymmetric addition of alkyllithium com

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