1-(4-hydroxy-2-methyl-1,1-dioxo-1λ⁶,2-benzothiazin-3-yl)ethanone

2-(3-benzoyl-4-hydroxy-1,1-dioxido-2H-benzo[e][1,2]thiazin-2-yl)-N-o-tolylacetamide

2-(3-acetyl-4-hydroxy-1,1-dioxido-2H-benzo[e][1,2]thiazin-2-yl)-N-phenylacetamide

3-((E)-1-amino-ethylidene)-1,1-dioxo-2,3-dihydro-1H-1λ6-benzo[e][1,2]thiazin-4-one

2-(3-acetyl-4-hydroxy-1,1-dioxido-2H-benzo[e][1,2]thiazin-2-yl)acetic acid