17158-16-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17158-16-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,5 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17158-16:
(7*1)+(6*7)+(5*1)+(4*5)+(3*8)+(2*1)+(1*6)=106
106 % 10 = 6
So 17158-16-6 is a valid CAS Registry Number.