6898-87-9
4-methyl-2-oxido-3-phenyl-1,2,5-oxadiazol-2-ium
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88059-58-9
4-methyl-3-(2-nitrophenyl)-2-oxido-1,2,5-oxadiazol-2-ium
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88059-60-3
4-methyl-3-(4-nitrophenyl)-2-oxido-1,2,5-oxadiazol-2-ium