1548642-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1548642-22-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,4,8,6,4 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1548642-22:
(9*1)+(8*5)+(7*4)+(6*8)+(5*6)+(4*4)+(3*2)+(2*2)+(1*2)=183
183 % 10 = 3
So 1548642-22-3 is a valid CAS Registry Number.
1548642-22-3Relevant academic research and scientific papers
Organocatalytic asymmetric aza-Michael addition of pyrazole to chalcone
Li, Pengfei,Fang, Fang,Chen, Ji,Wang, Jun
, p. 98 - 101 (2014/02/14)
An efficient enantioselective aza-Michael addition of pyrazole to chalcone was established. In the presence of the primary amine derived from cinchona alkaloid and acidic additive, the reactions afforded 1,4-adducts in high yields (up to 98%) with 68-88%
