87640-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87640-87-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,4 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87640-87:
(7*8)+(6*7)+(5*6)+(4*4)+(3*0)+(2*8)+(1*7)=167
167 % 10 = 7
So 87640-87-7 is a valid CAS Registry Number.
87640-87-7Relevant academic research and scientific papers
A VINYL SULFONE-MEDIATED DIELS-ALDER APPROACH TO THE FULLY REGIOCONTROLLED ELABORATION OF 4,5-DISUBSTITUTED 2- AND 3-CYCLOHEXENONES
Paquette, Leo A.,Kinney, William A.
, p. 5127 - 5130 (2007/10/02)
Reported here is a scheme which enables one to prepare independently 4,5-disubstituted 2- or 3-cyclohexenones where the nature of the pendant sidechains can be widely varied.
