200931-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 200931-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,9,3 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 200931-45:
(8*2)+(7*0)+(6*0)+(5*9)+(4*3)+(3*1)+(2*4)+(1*5)=89
89 % 10 = 9
So 200931-45-9 is a valid CAS Registry Number.