91586-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91586-18-4 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 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91586-18:
(7*9)+(6*1)+(5*5)+(4*8)+(3*6)+(2*1)+(1*8)=154
154 % 10 = 4
So 91586-18-4 is a valid CAS Registry Number.