Hydroxychloroquine Standard

Chloroquine Phosphate Impurity F; 2-[[(4RS)-4-[(7-chloroquinolin-4-yl)amino]pentyl](ethyl)amino]ethan-1-ol; (±)-Hydroxychloroquine;  Racemic Hydroxychloroquine; 2-[{4-[(7-Chloroquinolin-4-yl)amino]pentyl}(ethyl)amino]ethanol; 7-Chloro-4-[4-[ethyl(2-hydroxyethyl)amino]-1-methylbutylamino]-quinoline; Hydroxychloroquine (USP);