9-Ethyl-6,6-dimethyl-8-[4-(morpholin-4-yl)piperidin-1-yl]-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile Hydrochloride

Molbank(2024)

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摘要
Alectinib hydrochloride is an anticancer medication used for the first-line treatment of non-small cell lung cancer. Although it was approved for medical use ten years ago, and three polymorphs of this substance were proposed based on X-ray diffraction patterns, their crystal structures remained unknown to date. The main problem was the preparation of high quality single crystals due to the very low solubility of the salt. Herein, we report on the molecular and crystal structure of form I of alectinib hydrochloride as obtained using powder X-ray diffraction data from a laboratory source. Short Cl…N distances between the anion and the nitrogen atoms of the morpholine and benzo[b]carbazole rings indicate the positions of the H(N) atoms. As a result, the cation and anion form infinite Cl…H(N)-bonded chains.
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关键词
active pharmaceutical ingredient,alectinib,half uncertainty window,polymorphism,powder X-ray diffraction
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