681808-75-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681808-75-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,0 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 681808-75:
(8*6)+(7*8)+(6*1)+(5*8)+(4*0)+(3*8)+(2*7)+(1*5)=193
193 % 10 = 3
So 681808-75-3 is a valid CAS Registry Number.