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89044-93-9

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89044-93-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89044-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,0,4 and 4 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89044-93:
(7*8)+(6*9)+(5*0)+(4*4)+(3*4)+(2*9)+(1*3)=159
159 % 10 = 9
So 89044-93-9 is a valid CAS Registry Number.

89044-93-9Downstream Products

89044-93-9Relevant articles and documents

Reaction of Cerium(IV) Ammonium Nitrate with 3-Methylcephalosporins: Synthesis of a 2-Methoxy-3-methylcephalosporin

Fletton, Richard A.,Humber, David C.,Roberts, Stanley M.,Wright, John L.

, p. 1523 - 1526 (2007/10/02)

The cephalosporins (1)-(3) react with cerium(IV) ammonium nitrate (CAN) in aqueous acetic acid to give the thiazoles (4)-(6) respectively as the major products.The minor products from the reaction of the cephalosporin (1) reacted with CAN in aqueous aceti

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