| 1 | 439809-44-6 | 3-INDOXYL CHOLINE PHOSPHATE | 3-INDOXYL CHOLINE PHOSPHATE | C13H19N2O4P
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| 2 | 33866-52-3 | [3-(Aminocarbonyl)-2-phenyl-2-aziridinyl]phosphonic acid diethyl ester | [3-(Aminocarbonyl)-2-phenyl-2-aziridinyl]phosphonic acid diethyl ester | C13H19N2O4P
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| 3 | 114264-95-8 | 1H-Indole-3-ethanaminium, N,N,N-trimethyl-4-(phosphonooxy)-, inner salt | 1H-Indole-3-ethanaminium, N,N,N-trimethyl-4-(phosphonooxy)-, inner salt | C13H19N2O4P
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| 4 | 94133-85-4 | 4,5-dihydro-2-(1,2,3,4-tetrahydro-1-naphthyl)-1H-imidazolium dihydrogen phosphate | 4,5-dihydro-2-(1,2,3,4-tetrahydro-1-naphthyl)-1H-imidazolium dihydrogen phosphate | C13H19N2O4P
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