72842-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72842-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,8,4 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 72842-44:
(7*7)+(6*2)+(5*8)+(4*4)+(3*2)+(2*4)+(1*4)=135
135 % 10 = 5
So 72842-44-5 is a valid CAS Registry Number.
72842-44-5Relevant articles and documents
APPLICATION OF ACETOXYMETHYL ESTERS OF PENICILLINS FOR PREPARATION OF 7-AMINO-DESACETOXY-CEPHALOSPORANIC ACID (7-ADCA)
Gruszecki, Wojciech,Gdulewicz-Gruszecka, Maria,Borowski, Edward
, p. 1675 - 1679 (2007/10/02)
A simple method of preparing 7-amino-desacetoxy-cephalosporanic acid (7-ADCA) from acetoxymethyl esters of natural penicillins has been described.