667434-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667434-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,4,3 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667434-91:
(8*6)+(7*6)+(6*7)+(5*4)+(4*3)+(3*4)+(2*9)+(1*1)=195
195 % 10 = 5
So 667434-91-5 is a valid CAS Registry Number.