139097-96-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139097-96-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,9 and 7 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 139097-96:
(8*1)+(7*3)+(6*9)+(5*0)+(4*9)+(3*7)+(2*9)+(1*6)=164
164 % 10 = 4
So 139097-96-4 is a valid CAS Registry Number.
139097-96-4Relevant academic research and scientific papers
Narasaka,Shimada,Osoda,Iwasawa
, p. 1171 - 1172 (1991)
The Diels-Alder reaction of anthrone or 3-hydroxy-2-pyrone and methyl 4-hydroxy-2-butenoate proceeds efficiently by the use of phenylboronic acid as a template, giving the cycloadducts with high regio- and stereoselectivity.
