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75125-31-4

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75125-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75125-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,1,2 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75125-31:
(7*7)+(6*5)+(5*1)+(4*2)+(3*5)+(2*3)+(1*1)=114
114 % 10 = 4
So 75125-31-4 is a valid CAS Registry Number.

75125-31-4Relevant articles and documents

Process and intermediates for beta-lactam antibiotics

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, (2008/06/13)

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7-acylamino-(or 7-amino)-3-trifluoromethylsulfonyloxy-1-carba(1-dethia)-3-cephem-4-carboxylic acids and esters thereof

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, (2008/06/13)

7β-Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carboxylic acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises reacting a 3-triflate ester with a lithium halide in an aprotic polar solvent.

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