77517-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77517-74-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,1 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77517-74:
(7*7)+(6*7)+(5*5)+(4*1)+(3*7)+(2*7)+(1*4)=159
159 % 10 = 9
So 77517-74-9 is a valid CAS Registry Number.
77517-74-9Relevant articles and documents
A Annulation Procedure for Methylenecyclopentanes
Knapp, Spencer,O'Connor, Una,Mobilio, Dominick
, p. 4557 - 4560 (2007/10/02)
A two step sequence converts certain cyclic enones to fused methylenecyclopentanes using the annulation reagent 2-chloromethyl-3-trimethylsilylpropene.