109091-43-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109091-43-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,9 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109091-43:
(8*1)+(7*0)+(6*9)+(5*0)+(4*9)+(3*1)+(2*4)+(1*3)=112
112 % 10 = 2
So 109091-43-2 is a valid CAS Registry Number.