7613-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7613-04-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,1 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7613-04:
(6*7)+(5*6)+(4*1)+(3*3)+(2*0)+(1*4)=89
89 % 10 = 9
So 7613-04-9 is a valid CAS Registry Number.