155220-57-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155220-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,2,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 155220-57:
(8*1)+(7*5)+(6*5)+(5*2)+(4*2)+(3*0)+(2*5)+(1*7)=108
108 % 10 = 8
So 155220-57-8 is a valid CAS Registry Number.
155220-57-8Relevant articles and documents
A General Stereocontrolled Synthesis of cis-2,3 Disubstituted Pyrrolidines and Piperidines
Pal, Kollol,Behnke, Mark L.,Tong, Liang
, p. 6205 - 6208 (2007/10/02)
A general synthetic method is reported for the preparation of cis-2,3-disubstituted pyrrolidines and piperidines from readily available acyclic precursors.The key reaction involves the stereoselective reduction of a cyclic imine controlled by the C-3 subs
