85972-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 85972-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,9,7 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 85972-31:
(7*8)+(6*5)+(5*9)+(4*7)+(3*2)+(2*3)+(1*1)=172
172 % 10 = 2
So 85972-31-2 is a valid CAS Registry Number.
85972-31-2Relevant articles and documents
THE DIELS-ALDER REACTIVITY OF SOME NEW SULFUR (SELENIUM) SUBSTITUTED HALOBUTADIENES
Bridges, Alexander J.,Fischer, John W.
, p. 447 - 450 (1983)
3-PhS(e)-(1),2-(di)halobutadienes undergo BF3 catalysed cycloadditions with methyl vinyl ketone at 25 deg C, to give good yields of adducts in which the regiochemistry of addition is mainly controlled by the sulfur (selenium) atom.
