(S)-Hydroxychloroquine
(S)-Hydroxychloroquine S)-HCQ) is the enantiomer of Hydroxychloroquine. Hydroxychloroquine, a synthetic antimalarial agent, inhibits Toll-like receptor 7/9 (TLR7/9) signaling, and shows efficiently inhibits SARS-CoV-2 infection in vitro[3][4].