688318-75-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688318-75-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,3,1 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 688318-75:
(8*6)+(7*8)+(6*8)+(5*3)+(4*1)+(3*8)+(2*7)+(1*5)=214
214 % 10 = 4
So 688318-75-4 is a valid CAS Registry Number.