1686-95-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1686-95-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,8 and 6 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1686-95:
(6*1)+(5*6)+(4*8)+(3*6)+(2*9)+(1*5)=109
109 % 10 = 9
So 1686-95-9 is a valid CAS Registry Number.
1686-95-9Relevant articles and documents
Direct Fluorination of 1,3-Dicarbonyl Compounds
Chambers, Richard D.,Greenhall, Martin P.,Hutchinson, John
, p. 21 - 22 (1995)
1,3-Dicarbonyls, such as 1,3-diketones and 1,3-ketoesters, react directly with elemental fluorine at room temperature to give the corresponding 2-fluoro- and, in some cases, 2,2-difluoro-compounds in high yield.
