198639-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198639-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,6,3 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 198639-71:
(8*1)+(7*9)+(6*8)+(5*6)+(4*3)+(3*9)+(2*7)+(1*1)=203
203 % 10 = 3
So 198639-71-3 is a valid CAS Registry Number.
198639-71-3Relevant articles and documents
New efficient RCM-mediated synthesis of pyrrolidine derivatives
Majumdar, Krishna C.,Chakravorty, Santanu,Taher, Abu
, p. 3159 - 3169 (2008/12/22)
Fast and effective ring-closing olefin metathesis (RCM) of diallyamine derivatives of coumarin, quinolone, pyridine, and substituted benzene, using first-generation RCM ruthenium-based catalyst, leads to corresponding pyrrolidine derivatives in 70-95% yie