170309-22-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170309-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,3,0 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 170309-22:
(8*1)+(7*7)+(6*0)+(5*3)+(4*0)+(3*9)+(2*2)+(1*2)=105
105 % 10 = 5
So 170309-22-5 is a valid CAS Registry Number.