13663-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13663-05-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,6 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 13663-05:
(7*1)+(6*3)+(5*6)+(4*6)+(3*3)+(2*0)+(1*5)=93
93 % 10 = 3
So 13663-05-3 is a valid CAS Registry Number.