663933-84-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663933-84-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,9,3 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 663933-84:
(8*6)+(7*6)+(6*3)+(5*9)+(4*3)+(3*3)+(2*8)+(1*4)=194
194 % 10 = 4
So 663933-84-4 is a valid CAS Registry Number.