81505-79-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81505-79-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,0 and 5 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81505-79:
(7*8)+(6*1)+(5*5)+(4*0)+(3*5)+(2*7)+(1*9)=125
125 % 10 = 5
So 81505-79-5 is a valid CAS Registry Number.