204928-04-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204928-04-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,9,2 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 204928-04:
(8*2)+(7*0)+(6*4)+(5*9)+(4*2)+(3*8)+(2*0)+(1*4)=121
121 % 10 = 1
So 204928-04-1 is a valid CAS Registry Number.