20546-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20546-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,4 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20546-18:
(7*2)+(6*0)+(5*5)+(4*4)+(3*6)+(2*1)+(1*8)=83
83 % 10 = 3
So 20546-18-3 is a valid CAS Registry Number.