Patent · US Active

Crystal forms of thiophene derivatives

US12180222B2 · kind B2 · utility

0Cited by

5References

44Claims

0Family size

Assignee

TIANJIN HEMAY PHARMACEUTICAL CO., LTD. · CN

Inventors

Donglei Zhang · Tianjin, CN
Liyu Wang · Tianjin, CN
Xingwen Li · Xi'an, CN

Key dates

Filing date	Apr 30, 2019
Grant date	Dec 31, 2024
Priority date	—
Expiry date	Mar 10, 2042

Classification

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

Abstract

Disclosed are polymorph, crystal form III and crystal form IV 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.