Patent · US Active

Salt type and crystal type of 4H-pyrazolo [1, 5-alpha] benzimidazole compound and preparation method and intermediate thereof

US10428073B2 · kind B2 · utility

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13Claims

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Inventors

Xuehai Wang · 红钢城街道, CN
Charles Z. Ding · San Mateo, US
Jie Shen · Irvine, US
Shuhui CHEN · Shanghai, CN
Lie LI · 红钢城街道, CN
Gang Li · Beijing, CN
Yong Xu · 流花街道, CN
Cailin WANG · Shanghai, CN
Ronghua Tu · Hubei, CN
Jimeng Wang · Shanghai, CN
Yang Yue · Milpitas, US
Biao Deng · Shanghai, CN
Hailiang Chen · San Diego, US
Hui Liu · Xiamen, CN
Wenjie Sun · Hubei, CN
Cong Wang · Tangxia, CN
Lu Huang · Riverdale, US
Zheng Wang · 安丰镇, CN
Weidong Li · Cupertino, US

Key dates

Filing date	Sep 29, 2016
Grant date	Oct 1, 2019
Priority date	—
Expiry date	Sep 29, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/55
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Disclosed in the present invention are a salt type and crystal type of 4H-pyrazolo[1,5-alpha]benzimidazole compound and a preparation method and intermediate thereof. The 4H-pyrazolo[1,5-alpha]benzimidazole compound is represented by formula I:

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.