.beta.-Hydroxyethyl 2,4-dinitrophenyl ether 1-(2-Hydroxyethoxy)-2,4-dinitrobenzene 2,4-Dinitrophenoxyethanol 2-(2,4-Dinitrophenoxy)ethanol 2831-60-9 Ethanol, 2-(2,4-dinitrophenoxy)- NSC28669