CEPN	Salt of naproxen and chitosan crosslinked with epichlorohydrin
CN	Salt of naproxen and chitosan
COX	Cyclo-oxygenase enzyme
CT	Chitin
CTS	Chitosan
CTS–NAP	Physical mixture of chitosan and naproxen
$\overline{DA}$	Degree of acetylation
$\overline{DD}$	Degree of deacetylation
$\overline{DS}$	Degree of substitution
Id	Crystallinity index
Kpart	Partition constant
$\overline{M}v$	Average viscometric molar mass
NAP	Naproxen
[NAP]	Equilibrium concentration of naproxen
NSAID	Non-steroidal anti-inflammatory drug
PVP	Polyvinylpyrrolidone
Sd	Standard deviation
tR	PRetention time