42909-50-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42909-50-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,9,0 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42909-50:
(7*4)+(6*2)+(5*9)+(4*0)+(3*9)+(2*5)+(1*0)=122
122 % 10 = 2
So 42909-50-2 is a valid CAS Registry Number.