81819-45-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81819-45-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,1 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81819-45:
(7*8)+(6*1)+(5*8)+(4*1)+(3*9)+(2*4)+(1*5)=146
146 % 10 = 6
So 81819-45-6 is a valid CAS Registry Number.