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Application filed by Centrul De Cercetari Pentru Fibre ChimicefiledCriticalCentrul De Cercetari Pentru Fibre Chimice
Priority to RO114754ApriorityCriticalpatent/RO91264B1/ro
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventia se refera la un procedeu pentru purificarea 4,4'-(dihidroxi)-difenilpropanului prin extractie lichid-lichid utilizînd un amestec de solventi acetona ciclohexan si separarea compusului prin cristalizare.
RO114754A1984-06-021984-06-02Procedeu pentru purificarea 4,4'-(dihidroxi)difenilpropanului
RO91264B1
(ro)
Procedimiento para recuperar caprolactama del residuo que queda en la destilacion, bajo presion reducida, de caprolactama impura obtenida por transposicion de ciclohexanona-oxima
A mixture of diastereoisomer compounds, as obtained from (-)-5-(1-hydroxy-1-methylethyl)-2-methyl-2-cyclohexene-1-one, having mucose-cretolytic activity, a process for its preparation and pharmaceutical compositions containing the same
Nouveaux phénols di-ortho substitués dont une des substitutions est un hétérocycle, leur procédé de préparation, médicaments les contenant, notamment anti-hypertenseurs et nouveaux intermédiaires de synthèse