139449-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139449-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,4 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139449-91:
(8*1)+(7*3)+(6*9)+(5*4)+(4*4)+(3*9)+(2*9)+(1*1)=165
165 % 10 = 5
So 139449-91-5 is a valid CAS Registry Number.
139449-91-5Relevant articles and documents
The effects of the carbonyl group in the cyclization of 1-hexenyl radicals
Serra,Da Silva Correa,Do Vale
, p. 9463 - 9488 (1991)
The radical chain cyclization of allyl ether derivatives promoted by tosyl halides and light is suppressed by the presence of one carbonyl group conjugated with the double bond (acrylic double bond).