667867-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667867-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,6 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 667867-80:
(8*6)+(7*6)+(6*7)+(5*8)+(4*6)+(3*7)+(2*8)+(1*0)=233
233 % 10 = 3
So 667867-80-3 is a valid CAS Registry Number.