81548-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81548-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,4 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81548-65:
(7*8)+(6*1)+(5*5)+(4*4)+(3*8)+(2*6)+(1*5)=144
144 % 10 = 4
So 81548-65-4 is a valid CAS Registry Number.