20138-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20138-24-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,3 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20138-24:
(7*2)+(6*0)+(5*1)+(4*3)+(3*8)+(2*2)+(1*4)=63
63 % 10 = 3
So 20138-24-3 is a valid CAS Registry Number.