2804-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2804-63-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,0 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2804-63:
(6*2)+(5*8)+(4*0)+(3*4)+(2*6)+(1*3)=79
79 % 10 = 9
So 2804-63-9 is a valid CAS Registry Number.