81819-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81819-71-8 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, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81819-71:
(7*8)+(6*1)+(5*8)+(4*1)+(3*9)+(2*7)+(1*1)=148
148 % 10 = 8
So 81819-71-8 is a valid CAS Registry Number.