7028-52-6
(4-hydroxy-3-oxo-3,4-dihydro-2H-benzo[1,4]thiazin-2-yl)-acetic acid
→
63351-92-8
2-(3-oxo-4H-1,4-benzothiazin-2-ylidene)acetic acid
7291-93-2
(2-nitro-phenylsulfanyl)-succinic acid dimethyl ester