20029-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20029-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,2 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20029-42:
(7*2)+(6*0)+(5*0)+(4*2)+(3*9)+(2*4)+(1*2)=59
59 % 10 = 9
So 20029-42-9 is a valid CAS Registry Number.