1-(2-(5-(4-Nitrophenyl)-2H-tetrazol-2-yl)ethyl)piperidine hydrate 158553-38-9 2-(2-Piperidinoethyl)-5-(4-nitrophenyl)tetrazole hydrate Piperidine, 1-(2-(5-(4-nitrophenyl)-2H-tetrazol-2-yl)ethyl)-, hydrate