Cas 93553-12-9,C25H25Cl3N2O8S2

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Check Digit Verification of cas no

The CAS Registry Mumber 93553-12-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,5,5 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 93553-12:
(7*9)+(6*3)+(5*5)+(4*5)+(3*3)+(2*1)+(1*2)=139
139 % 10 = 9
So 93553-12-9 is a valid CAS Registry Number.

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93553-12-9Relevant academic research and scientific papers

DIRECT INCORPORATION OF A 6α(7α)-FORMAMIDO GROUP INTO PENICILLINS AND CEPHALOSPORINS

Pearson, Michael J.

, p. 377 - 380 (1985)

6β(7β)-(N-2,2,2-Trichloroethoxycarbonyl-N-triflouromethanesulphonylamino)penicillins and cephalosporins have been converted into the corresponding 6α(7α)-formamido-6β(7β)-2,2,2-trichloroethoxycarbonylamino deriatives, by treatment with N,N-bis(trimethylsi

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