109421-84-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109421-84-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,4,2 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109421-84:
(8*1)+(7*0)+(6*9)+(5*4)+(4*2)+(3*1)+(2*8)+(1*4)=113
113 % 10 = 3
So 109421-84-3 is a valid CAS Registry Number.