Dimethyl 1-(4-cyanobenzyl)-1H-pyrazole-3,5-dicarboxylate

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3,5-Dimethyl-1-(4-nitrophenyl)-1H-pyrazole

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3,5-Dimethyl-4-nitroso-1H-pyrazole

In the unit cell of the title compound, C(5)H(7)N(3)O, there are two conformers (A and B) which differ in the position of the oxime group with respect to the protonated pyrazole nitro-gen (trans in the A conformer and cis in the B conformer) and in the geometric parameters. The oxime group exists in the nitroso form in both conformers. In the crystal, mol-ecules are linked by inter-molecular N-...

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