High purity phthalein derivatives and method for preparing same

High purity phthalein derivatives and method for preparing same

The invention concerns high purity phthalcin derivatives enabling their use for medical applications or in the field of biotechnology, as well as their preparation method whereby a phthatic anhydride derivative is condensed with a naphthol or phenol derivative in an organic acid ester and the crysta...

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Hauptverfasser: TRAN-GUYON JOANNE, SCHERNINSKI FRANCOIS
Format: Patent
Sprache:eng
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CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator TRAN-GUYON JOANNE
SCHERNINSKI FRANCOIS
description The invention concerns high purity phthalcin derivatives enabling their use for medical applications or in the field of biotechnology, as well as their preparation method whereby a phthatic anhydride derivative is condensed with a naphthol or phenol derivative in an organic acid ester and the crystals of the resulting condensate are converted by action of a strong acid or one of its precursors in anhydrous medium.
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subjects CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
title High purity phthalein derivatives and method for preparing same
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