Moroxydine (ABOB) hydrochloride (Standard) is the analytical standard of Moroxydine (ABOB) hydrochloride (HY-B0420A). Moroxydine (ABOB) hydrochloride is a broad-spectrum agent with multi-antiviral activities against DNA and RNA viruses, including influenza virus, herpes simplex, varicella zoster, measles, mumps disease, hepatitis C virus, etc. Moroxydine hydrochloride exhibits excellent antiviral activity and shows low cytotoxicity to cells infected by dsRNA viruses (grass carp reovirus, GCRV) and large DNA viruses (giant salamander iridovirus, GSIV). Moroxydine hydrochloride blocks the GCRV-induced cytopathic effects and eliminates nucleocapsids in ctenopharyngodon idella kidney (CIK) cells to keep the normal morphological structure. Moroxydine hydrochloride significantly inhibits the apoptosis, the caspase 3 activity, Bax expression and down-regulates Bcl-2 levels.