Crystalline polymorph of 7-ethyl-10-hydroxycamptothecin

C - Chemistry – Metallurgy – 07 – D

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C07D 491/22 (2006.01) A61K 31/4745 (2006.01)

Patent

CA 2690145

A crystalline polymorph of 7-ethyl-10-hydroxycaraptothecin exhibiting an X-ray diffraction pattern having peaks at 10.9~0.2, 13.2~0.2, 23.910.2, and 26.110.2 2-theta degree.

L'invention concerne un polymorphe cristallin de 7-éthyl-10-hydroxycaraptothécine présentant un diagramme de diffraction des rayons X comportant des crêtes à 10,9±0,2, 13,2±0,2, 23,9±10,2 et 26,1±10,2 2-thêta degré.

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