83431-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83431-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,4,3 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83431-64:
(7*8)+(6*3)+(5*4)+(4*3)+(3*1)+(2*6)+(1*4)=125
125 % 10 = 5
So 83431-64-5 is a valid CAS Registry Number.