2-tert-butil-4,6-dinitrofenol
reakčná zmes zložená zo zmesi izomérov 1,1'-[(dihydroxyfenylén)bis(diazéndiyl-3,1-fenyléndiazéndiyl1-[3-(dimetylamónio)propyl]-6-hydroxy-4-metyl-2-oxo-1,2-dihydropyridín-5,3-diyl)]dipyridínium-tetrachloridu a 1-1-[3-(dimetylamónio)propyl]-5-[3-(4-1-[3-(dimetylamónio)propyl]-2-hydroxy-4-metyl-6-oxo-5-pyridínio-1,6-dihydro-3-pyridyldiazenyl]fenyldiazenyl-2,4(alebo 2,6 alebo 3,5)-dihydroxyfenyldiazenyl)fenyldiazenyl]-6-hydroxy-4-metyl-2-oxo-1,2-dihydro-3-pyridylpyridínium-tetrachloridu