491-93-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 491-93-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,9 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 491-93:
(5*4)+(4*9)+(3*1)+(2*9)+(1*3)=80
80 % 10 = 0
So 491-93-0 is a valid CAS Registry Number.