Patent · US Active

Crystal forms of thiophene derivatives

US11274104B2 · kind B2 · utility

1Cited by

4References

25Claims

0Family size

Assignee

TIANJIN HEMAY PHARMACEUTICAL CO., LTD. · CN

Inventors

Donglei Zhang · Tianjin, CN
Liyu Wang · Tianjin, CN
Yukun Chang · Tianjin, CN

Key dates

Filing date	Apr 30, 2019
Grant date	Mar 15, 2022
Priority date	—
Expiry date	Apr 30, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B2200/13
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Disclosed is crystal form II of compound (S)—N-[5-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-4,6-dioxo-5,6-dihydro-4H-thieno[3,4-c]pyrrole-1-yl]acetamide.

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