1021115-24-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021115-24-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,1,1 and 5 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1021115-24:
(9*1)+(8*0)+(7*2)+(6*1)+(5*1)+(4*1)+(3*5)+(2*2)+(1*4)=61
61 % 10 = 1
So 1021115-24-1 is a valid CAS Registry Number.