68637-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68637-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,3 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 68637-22:
(7*6)+(6*8)+(5*6)+(4*3)+(3*7)+(2*2)+(1*2)=159
159 % 10 = 9
So 68637-22-9 is a valid CAS Registry Number.
68637-22-9Relevant academic research and scientific papers
Process for preparing di-7-azido cephalosporin compounds
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, (2008/06/13)
A novel total synthesis process is provided, yielding cephalosporin or penicillin compounds. The process uses as starting material a glycine ester, which first is reacted to yield a dihydrothiazine, and subsequently condensed with azidoacetyl chloride to
