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Acta Cryst. (2013). C69, 549-555  [ doi:10.1107/S0108270113010056 ]

Five N'-benzyl­idene-N-methyl­pyrazine-2-carbohydrazides

L. R. Gomes, J. N. Low, A. S. M. C. Rodrigues, J. L. Wardell, C. H. da S. Lima and M. V. N. de Souza

Formula: C13H12N4O, C14H14N4O2, C14H11N5O·2H2O, C13H11N5O3 and C13H11N5O3

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