209331-16-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209331-16-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,3,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 209331-16:
(8*2)+(7*0)+(6*9)+(5*3)+(4*3)+(3*1)+(2*1)+(1*6)=108
108 % 10 = 8
So 209331-16-8 is a valid CAS Registry Number.