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Application filed by Institutul De Cercetari ChimicefiledCriticalInstitutul De Cercetari Chimice
Priority to RO120339ApriorityCriticalpatent/RO92834B1/en
Publication of RO92834A2publicationCriticalpatent/RO92834A2/en
Publication of RO92834B1publicationCriticalpatent/RO92834B1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventia se refera la un procedeu de purificare avansata a alfa-naftolului tehnic care contine ca impuritate principala beta-naftol, în carescopul încadrarii produsului în specificatii severe de calitate care limiteaza continutul de izomer beta din produs, prin recristalizare din amestec de solventi.The invention relates to an advanced purification process of the technical alpha-naphthol which contains the main impurity beta-naphthol, in which the product frames the product into severe quality specifications that limit the beta-isomer content of the product by recrystallization from the solvent mixture.
RO120339A1985-10-111985-10-11Process for the purification of alpha-naphthol
RO92834B1
(en)
1,2,3,6-Tetrahydroisonicotinic acid and derivatives thereof, methods and starting products for their preparation, and pharmaceutical compositions containing them.