Chemical Structure / Formula
Formula: C20H22ClN3O
Structure: A 4-aminoquinoline similar to chloroquine but with a hydroxyaniline group.

Mechanism of Action
Similar to chloroquine: heme polymerase inhibition and accumulation of toxic heme.
Uses
Treatment of chloroquine-resistant malaria (P. falciparum).
Combination therapy (e.g., Artesunate-Amodiaquine).
Side Effects
Agranulocytosis and hepatotoxicity (rare but severe).
GI disturbances, pruritus, QT prolongation.