5242-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5242-17-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,4 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5242-17:
(6*5)+(5*2)+(4*4)+(3*2)+(2*1)+(1*7)=71
71 % 10 = 1
So 5242-17-1 is a valid CAS Registry Number.