98442-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98442-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,4,4 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 98442-22:
(7*9)+(6*8)+(5*4)+(4*4)+(3*2)+(2*2)+(1*2)=159
159 % 10 = 9
So 98442-22-9 is a valid CAS Registry Number.
98442-22-9Relevant articles and documents
A MILD, RAPID AND CONVENIENT ESTERIFICATION OF HALF ESTERS OF MALONIC ACID
Gutman, Arie L.,Boltanski, Aviv
, p. 1573 - 1576 (2007/10/02)
A new method for the esterification of half esters of malonic acid with chloroformates is described.The reaction proceeds via the mixed anhydride followed by spontaneous decarboxylation.
