688585-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688585-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,5,8 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 688585-20:
(8*6)+(7*8)+(6*8)+(5*5)+(4*8)+(3*5)+(2*2)+(1*0)=228
228 % 10 = 8
So 688585-20-8 is a valid CAS Registry Number.