1024020-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1024020-20-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,4,0,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1024020-20:
(9*1)+(8*0)+(7*2)+(6*4)+(5*0)+(4*2)+(3*0)+(2*2)+(1*0)=59
59 % 10 = 9
So 1024020-20-9 is a valid CAS Registry Number.