Biogal Gyogyszerarugyar Rt

Laszlo Hanak

Vilmos Keri

Janos Balint

Istvan Melczer

Gyorgy Deak

Berta Mako

Ferenc Radnai

Erno Karacxony

Tibor Szanya

Csaba Hajdufi

Judit Dencs

Edit Nagy

Gyula Marton

Janos Kelemen

Gyongyi Strbka

Anita Karczub

A process is disclosed for the solution chromatographic purification of cyclosporin A from a starting mixture containing one or more of cyclosporin A, B, C, other cyclosporin components that are more polar or more apolar than cyclosporin A, and other like contaminants, by heating the starting mixture or an evaporation residue thereof to a temperature from about 80.degree. C. to about 115.degree. C., melting the heated starting mixture, and carrying out solution chromatography of the melted material, suitably first in a 48:50:2 mixture of chloroform, dichloromethane, and ethanol, and then in a mixture of like proportions, of the solvents chloroform, ethylacetate, and ethanol.

Process for the purification of cyclosporin A

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Boldogkoujfalu, Hungary

Laszlo Hanak