1,5-dioxo-4,5-dihydro-1H-pyrido[3,2-a]phenoxazine-3-carboxylic acid;1-Hydroxy-3-carboxy-5H-pyrido[3,2-a]phenoxazin-5-one 1-Hydroxy-5H-pyrido[3,2-a]phenoxazin-5-one-3-carboxylic acid; Catalin; Catalin (pharmaceutical); Catalin K; Clarvisan; HPPC; Kary-Uni; Pirfenoxone; Pyrphenoxone
