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Acta Cryst. (2007). C63, o685-o689  [ doi:10.1107/S0108270107049001 ]

Three sterically hindered 6-amino-5-cyano-2-methyl-4-(1-naphthyl)-4H-pyran-3-carboxylate derivatives

V. N. Nesterov, D. J. Wiedenfeld, S. V. Nesterova and L. F. Hastings

Formula: C21H20N2O4, C21H20N2O3 and C20H18N2O3

Online 14 November 2007


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