42609-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42609-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,6,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42609-72:
(7*4)+(6*2)+(5*6)+(4*0)+(3*9)+(2*7)+(1*2)=113
113 % 10 = 3
So 42609-72-3 is a valid CAS Registry Number.