42809-06-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42809-06-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,0 and 9 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 42809-06:
(7*4)+(6*2)+(5*8)+(4*0)+(3*9)+(2*0)+(1*6)=113
113 % 10 = 3
So 42809-06-3 is a valid CAS Registry Number.