Phase transfer catalyst

2-mercapto-4-(methoxycarbonyl)pyridine1-oxide

4-nitrobenzyl2,3-dioxobutanoate

tert-Butyl 4-nitro-1H-indazole-1-carboxylate

2,4-dinitrophenyl4-methylbenzenesulfonate

6-nitro-1H-indazol-5-ol

(4-nitrophenyl)methyl (5R)-6-[(1R)-1-hydroxyethyl]-3-[2-[(4-nitrophenyl)methoxycarbonylamino]ethylsulfanyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate

ethyl2-diazoacetate

4-nitrobenzylallyl(piperidin-4-yl)carbamate

4-butyl-2-nitroaniline

N-(4-butyl-2-nitrophenyl)acetamide

3-acetoxypyridine1-oxide

5-nitro-3-phenyl-1H-indazole

(Z)-N-(3-(dimethylamino)-2-nitroallylidene)-N-methylmethanaminium

N-(3-(1-hydroxyethyl)-4-nitrobenzyl)-6-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)hexanamide

2-Hydroxy-6-nitro-M-anisaldehyde Benzenesulfonate

4-(benzyloxy)-1-methyl-2-nitrobenzene