167170-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 167170-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,1,7 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 167170-91:
(8*1)+(7*6)+(6*7)+(5*1)+(4*7)+(3*0)+(2*9)+(1*1)=144
144 % 10 = 4
So 167170-91-4 is a valid CAS Registry Number.