667885-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667885-55-4 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 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 667885-55:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*5)+(2*5)+(1*5)=234
234 % 10 = 4
So 667885-55-4 is a valid CAS Registry Number.