91569-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91569-26-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,6 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 91569-26:
(7*9)+(6*1)+(5*5)+(4*6)+(3*9)+(2*2)+(1*6)=155
155 % 10 = 5
So 91569-26-5 is a valid CAS Registry Number.