7706-87-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7706-87-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,0 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7706-87:
(6*7)+(5*7)+(4*0)+(3*6)+(2*8)+(1*7)=118
118 % 10 = 8
So 7706-87-8 is a valid CAS Registry Number.
7706-87-8Relevant articles and documents
Simple preparation of 4-aryl- and 4-alkyl-2(5H)-furanones from β-substituted crotonic esters
Kagabu,Shimizu,Ito,Moriya
, p. 830 - 832 (2007/10/02)
Treatment of β-aryl- or β-alkylcrotonic esters with selenium dioxide in acetic acid in the presence of a catalytic amount of perchloric acid gave 4-substituted 2(5H)-furanones in moderate to good yields.
