109390-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109390-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,3,9 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109390-81:
(8*1)+(7*0)+(6*9)+(5*3)+(4*9)+(3*0)+(2*8)+(1*1)=130
130 % 10 = 0
So 109390-81-0 is a valid CAS Registry Number.