856809-80-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856809-80-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,8,0 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 856809-80:
(8*8)+(7*5)+(6*6)+(5*8)+(4*0)+(3*9)+(2*8)+(1*0)=218
218 % 10 = 8
So 856809-80-8 is a valid CAS Registry Number.