The title compound, C9H15N5O, is an antialopecia agent. The crystal belongs to space group P21 with cell dimensions a = 9.3799(5) , b = 8.3319(4), c = 12.9984(7)Å and β = 90.191(3)°. The final R value is 0.092. There are two crystallographically independent molecules in an asymmetric unit. They adopt significantly different conformations. The hybridization states of the nitrogen atoms in piperidine rings are markedly different in these molecules.