204847-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204847-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,8,4 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 204847-20:
(8*2)+(7*0)+(6*4)+(5*8)+(4*4)+(3*7)+(2*2)+(1*0)=121
121 % 10 = 1
So 204847-20-1 is a valid CAS Registry Number.