6603-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6603-68-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,0 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6603-68:
(6*6)+(5*6)+(4*0)+(3*3)+(2*6)+(1*8)=95
95 % 10 = 5
So 6603-68-5 is a valid CAS Registry Number.