81603-60-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81603-60-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,0 and 3 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81603-60:
(7*8)+(6*1)+(5*6)+(4*0)+(3*3)+(2*6)+(1*0)=113
113 % 10 = 3
So 81603-60-3 is a valid CAS Registry Number.