688809-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688809-87-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,8,0 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 688809-87:
(8*6)+(7*8)+(6*8)+(5*8)+(4*0)+(3*9)+(2*8)+(1*7)=242
242 % 10 = 2
So 688809-87-2 is a valid CAS Registry Number.