| 3-benzoyl-4-hydroxy-5-(p-nitrobenzylidene)-2(5h)-thiophenon |
| 3-benzoyl-4-hydroxy-5-((4-nitrophenyl)methylene)-2(5h)-thiophenon |
| 4-pentadienoic acid, 2-benzoyl-3-hydroxy-4-mercapto-5-(p-nitrophenyl)- gam |
| ma-(thio lactone) |
| 3-benzoyl-4-hydroxy-5-(p-nitrobenzylidene)-2(5h)-thiophenone |
| 3-benzoyl-5-p-nitrobenzylidene-2,5-dihydro-4-hydroxy-2-oxothiophen |
