(3-Oxo-2,3-dihydro-4H-1,4-benzothiazin-4-yl)acetic acid

(2,3-dihydro-3-oxo-4h-1,4-benzothiazin-4-yl)acetic acid ; 4h-1,4-benzothiazine-4-aceticacid, 2,3-dihydro-3-oxo- ; 4-(carboxymethyl)-3,4-dihydro-3-oxo-2h-1,4-benzothiazine, 2-(2,3-dihydro-3-oxo-4h-1,4-benzothiazin-4-yl)ethanoic acid ; 2-(3-oxo-2h-benzo[b][1,4]thiazin-4(3h)-yl)acetic acid ; 4h-1,4-benzothiazine-4-aceticacid