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Heterocyclic derivatives of the hydrazine, in particular of 1 - 2 -) - 5 - methyl - isoxazolyl - (3) - carbonyl - hydrazine, and the preparation of these latter
Heterocyclic derivatives of the hydrazine, in particular of 1 - 2 -) - 5 - methyl - isoxazolyl - (3) - carbonyl - hydrazine, and the preparation of these latter