121767-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121767-33-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,6 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121767-33:
(8*1)+(7*2)+(6*1)+(5*7)+(4*6)+(3*7)+(2*3)+(1*3)=117
117 % 10 = 7
So 121767-33-7 is a valid CAS Registry Number.
121767-33-7Relevant academic research and scientific papers
A REGIO- AND STEREOSELECTIVE SYNTHESIS OF SUBSTITUTED PIPERIDONES
Bayard, Philippe,Ghosez, Leon
, p. 6115 - 6118 (2007/10/02)
The new activated 2-aza-1,3-dienes 1 are readily prepared by acylation of N-trimethylsilylimines 3.They react with electrophilic olefins to yield substituted piperidones 4 and 6 with high diastereoselectivity.
