Patent · US Expired

Forms of 5-azacytidine

US6887855B2 · kind B2 · utility

32Cited by

6References

8Claims

0Family size

Assignees

Pharmion LLC · US
Ash Stevens, LLC · US

Inventors

Dumitru Ionescu · Ann Arbor, US
Peter Blumbergs · Royal Oak, US
Gary L. Silvey · Overland Park, US

Key dates

Filing date	Mar 17, 2003
Grant date	May 3, 2005
Priority date	—
Expiry date	May 1, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07H19/12
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention provides novel polymorphic and pseudopolymorphic crystalline forms of 5-azacytidine, along with methods for preparing said forms, wherein 5-azacytidine is represented by the formula: The invention also includes pharmaceutical compositions comprising said forms.

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