7443-60-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7443-60-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 3 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7443-60:
(6*7)+(5*4)+(4*4)+(3*3)+(2*6)+(1*0)=99
99 % 10 = 9
So 7443-60-9 is a valid CAS Registry Number.