13169-26-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13169-26-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,6 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13169-26:
(7*1)+(6*3)+(5*1)+(4*6)+(3*9)+(2*2)+(1*6)=91
91 % 10 = 1
So 13169-26-1 is a valid CAS Registry Number.