667405-92-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667405-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,4,0 and 5 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 667405-92:
(8*6)+(7*6)+(6*7)+(5*4)+(4*0)+(3*5)+(2*9)+(1*2)=187
187 % 10 = 7
So 667405-92-7 is a valid CAS Registry Number.