91618-17-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91618-17-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,1 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91618-17:
(7*9)+(6*1)+(5*6)+(4*1)+(3*8)+(2*1)+(1*7)=136
136 % 10 = 6
So 91618-17-6 is a valid CAS Registry Number.