167391-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 167391-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,3,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 167391-74:
(8*1)+(7*6)+(6*7)+(5*3)+(4*9)+(3*1)+(2*7)+(1*4)=164
164 % 10 = 4
So 167391-74-4 is a valid CAS Registry Number.