109188-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109188-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,1,8 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109188-31:
(8*1)+(7*0)+(6*9)+(5*1)+(4*8)+(3*8)+(2*3)+(1*1)=130
130 % 10 = 0
So 109188-31-0 is a valid CAS Registry Number.