2-[5-[(2-iodophenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]acetic acid

2-[(5E)-5-[(5-bromo-1H-indol-3-yl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]acetic acid

2-[(5Z)-5-[(4-iodophenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]acetic acid