17663-84-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17663-84-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,6 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17663-84:
(7*1)+(6*7)+(5*6)+(4*6)+(3*3)+(2*8)+(1*4)=132
132 % 10 = 2
So 17663-84-2 is a valid CAS Registry Number.