667888-75-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667888-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,8 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 667888-75:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*8)+(2*7)+(1*5)=247
247 % 10 = 7
So 667888-75-7 is a valid CAS Registry Number.