20334-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20334-56-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,3 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20334-56:
(7*2)+(6*0)+(5*3)+(4*3)+(3*4)+(2*5)+(1*6)=69
69 % 10 = 9
So 20334-56-9 is a valid CAS Registry Number.
20334-56-9Relevant articles and documents
Acetals oxidation into esters with electrophilic halogens
Mingotaud,Florentin,Marquet
, p. 2401 - 2404 (1992)
A preparative oxidation of dioxolanes groups into esters is described. Among the different electophilic halogens and solvents which have been tested, ICl/H2O in methylene chloride and Br2/H2O in acetonitrile gave the best results.