Patent · US Active

Processes for the preparation of clopidogrel hydrogen sulfate polymorphic form I

US7999106B2 · kind B2 · utility

1Cited by

2References

23Claims

0Family size

Assignee

KRKA, Tovarna Zdravil D.D. Novo Mesto · SI

Inventors

Haifang Mao · Shanghai, CN
Hongguang Qian · Shanghai, CN
Chen CHEN · Wuxi, CN

Key dates

Filing date	Apr 19, 2005
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Apr 2, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D487/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Processes for the preparation of clopidogrel hydrogen sulfate of polymorphic form I are described which include use of specific solvents and process measures to avoid formation of undesired by-products.

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