5739-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5739-81-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5739-81:
(6*5)+(5*7)+(4*3)+(3*9)+(2*8)+(1*1)=121
121 % 10 = 1
So 5739-81-1 is a valid CAS Registry Number.
5739-81-1Relevant articles and documents
Stereoselective addition of alcohol to acetylenecarboxylate catalyzed by silver(I) salt
Kataoka, Yasutaka,Matsumoto, Osamu,Tani, Kazuhide
, p. 727 - 728 (1996)
A silver(I) salt catalyzed the stereoselective trans addition of alcohol to dimethyl acetylenedicarboxylate smoothly under mild conditions to afford dimethyl methoxyfumarate in a quantitative yield.