91167-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91167-28-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,6 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91167-28:
(7*9)+(6*1)+(5*1)+(4*6)+(3*7)+(2*2)+(1*8)=131
131 % 10 = 1
So 91167-28-1 is a valid CAS Registry Number.