685861-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685861-91-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,8,6 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 685861-91:
(8*6)+(7*8)+(6*5)+(5*8)+(4*6)+(3*1)+(2*9)+(1*1)=220
220 % 10 = 0
So 685861-91-0 is a valid CAS Registry Number.