65416-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65416-83-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,4,1 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65416-83:
(7*6)+(6*5)+(5*4)+(4*1)+(3*6)+(2*8)+(1*3)=133
133 % 10 = 3
So 65416-83-3 is a valid CAS Registry Number.
65416-83-3Relevant articles and documents
Process for preparing cephalosporin esters in the presence of liquid sulfur dioxide
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, (2008/06/13)
A process for preparing a cephalosporin ester which comprises subjecting an organic halide or an alcohol to reaction with a cephalosporin acid, a cephalosporin acid halide or a salt thereof in the presence of liquid sulfur dioxide.