Chia Tai Tianqing Pharmaceutical Group Co., Ltd.

Centaurus Biopharma Co., Ltd.

Chao Gao

Xiquan Zhang

Fei Liu

Yizhong Zhu

Song Tang

Lulu Wang

Jianqiu Tang

Bo Zhu

The present invention provides a crystal of 6-arylamino pyridone carboxamide compound and a preparation method thereof. The crystal is obtained by dissolving 6-(2-chloro-4-iodophenylamino)-N-(2-hydroxylethyoxyl)-5-methyl-4-oxo-4,5-dihydrofuro[3,2-c]pyridin-7-carboxamide in an aprotic polar solvent and adding a second solvent thereto. The crystallization method has the advantage of simple and convenient operations, and is beneficial to an industrial production. The resulting crystal has the advantage a high purity and good stability, and is benefit to the manufacture and storage of a medicament containing the same.

6-aryl amino pyridone formamide compound crystal and preparation method therefor

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Lianyungang, China

Chao Gao