Patent · US Active

Crystalline, anhydrous forms of oxymorphone hydrochloride

US9440986B2 · kind B2 · utility

1Cited by

2References

13Claims

0Family size

Assignee

ENDO PHARMACEUTICALS INC. · US

Inventors

Andreas Fischer · Castro Valley, US
Dagmar Peters-Groth · Aachen, DE
Dagmar Lischke · Eschweiler, DE

Key dates

Filing date	Feb 4, 2015
Grant date	Sep 13, 2016
Priority date	—
Expiry date	Feb 4, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B2200/13
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Crystalline, anhydrous hydrochloride salts of 4,5α-epoxy-3,14-dihydroxy-17-methylmorphinan-6-one (oxymorphone) are disclosed and three polymorphic forms of these salts are reported. The invention further relates to a method for the production of such salts, a pharmaceutical composition comprising an effective amount of such a salt and such a salt as a medicament and for the treatment and/or prevention of pain.

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