215671-84-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215671-84-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,6,7 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 215671-84:
(8*2)+(7*1)+(6*5)+(5*6)+(4*7)+(3*1)+(2*8)+(1*4)=134
134 % 10 = 4
So 215671-84-4 is a valid CAS Registry Number.
215671-84-4Relevant articles and documents
Synthesis of isocoumarins via palladium catalyzed reactions of methyl 2- (2',2'-dibromovinyl)benzoates
Wang, Le,Shen, Wang
, p. 7625 - 7628 (2007/10/03)
3-Substituted isocoumarins are synthesized in good to excellent yields via palladium catalyzed coupling of 2-(2',2'-dibromovinyl)benzoates and organostannanes. The process involves a Stille reaction, and a subsequent annulation reaction.
