The chemical Methacycline hydrochloride has a designated molecular formula of C22H23ClN2O8 and a molecular weight of 478.882 g/mol. Synonyms may include: Adriamicina, Ciclobiotic, EINECS 223-568-3, Germiciclin, Globociclina, Megamycine, Metacycline hydrochloride, Metadomus, Methacycline monohydrochloride, Metilenbiotic, Optimycin, Physiomycine (ChemID). Methacycline hydrochloride has been assigned a MeSH pharmacological action of: Antibacterial.