309-22-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309-22-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,0 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 309-22:
(5*3)+(4*0)+(3*9)+(2*2)+(1*2)=48
48 % 10 = 8
So 309-22-8 is a valid CAS Registry Number.