204580-56-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204580-56-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,5,8 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 204580-56:
(8*2)+(7*0)+(6*4)+(5*5)+(4*8)+(3*0)+(2*5)+(1*6)=113
113 % 10 = 3
So 204580-56-3 is a valid CAS Registry Number.