91589-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91589-16-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,8 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 91589-16:
(7*9)+(6*1)+(5*5)+(4*8)+(3*9)+(2*1)+(1*6)=161
161 % 10 = 1
So 91589-16-1 is a valid CAS Registry Number.