7613-38-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7613-38-9 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, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7613-38:
(6*7)+(5*6)+(4*1)+(3*3)+(2*3)+(1*8)=99
99 % 10 = 9
So 7613-38-9 is a valid CAS Registry Number.