688028-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688028-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,0,2 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 688028-42:
(8*6)+(7*8)+(6*8)+(5*0)+(4*2)+(3*8)+(2*4)+(1*2)=194
194 % 10 = 4
So 688028-42-4 is a valid CAS Registry Number.