74643-15-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74643-15-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,4 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74643-15:
(7*7)+(6*4)+(5*6)+(4*4)+(3*3)+(2*1)+(1*5)=135
135 % 10 = 5
So 74643-15-5 is a valid CAS Registry Number.
74643-15-5Relevant academic research and scientific papers
Cephalosporin analogues and processes for the preparation thereof
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, (2008/06/13)
Compounds of the formula STR1 wherein X is --O--or --S--; R1 is amino or a substituted amino group; R2 is carboxy or a protected carboxy group; and the heavy solid line means single or double bond; the compounds are useful in the tre
