ES364960A1 - A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
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Laboratori Biochimici Fargal Pharmasiast SpA
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Laboratori Biochimici Fargal Pharmasiast SpA
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the preparation of 4-hydroxy-3-carboxy-l-benzal-isonicotinoyl hydrazone and its salts of the formula: ** (see formula) ** Where x is hydrogen, a cation of an alkaline or alkaline-earth metal, methylglucamine or lysine, whose procedure comprises the operations of mixing 4-hydroxy-3-carboxy-1-benzaldehyde in alcoholic solution with isonicotinhydrazide in ethanolic solution, heating the mixture of reaction to precipitation of the 4-hydroxy-3-carboxy-1-benzal-isonicotinoyl-hydrazone, cooling and filtering the obtained precipitate, and, if it is desired to prepare the salts of this compound. (Machine-translation by Google Translate, not legally binding)
ES364960A1969-03-281969-03-28A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
ExpiredES364960A1
(en)
A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 4-hydroxy-3-carboxi-1-benzal-isonicotinoil-hydrazone and its salts. (Machine-translation by Google Translate, not legally binding)
A procedure for the continuous precipitation of gelatinous products, especially of pigments. (Machine-translation by Google Translate, not legally binding)