1100920-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1100920-83-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,0,0,9,2 and 0 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1100920-83:
(9*1)+(8*1)+(7*0)+(6*0)+(5*9)+(4*2)+(3*0)+(2*8)+(1*3)=89
89 % 10 = 9
So 1100920-83-9 is a valid CAS Registry Number.