Crystalline forms of per-chloro-γ-cyclodextrines

US10414830B2 · kind B2 · utility

Assignee

• Fresenius Kabi iPSUM S.r.l · IT

Inventors

• Walter Cabri · Sant Celoni, ES
• Antonio Ricci · Birsfelden, CH
• Jacopo Zanon · Venezia, IT
• Saswata Lahiri · Sindhar, IN
• Govind Singh · Ghaziabad, IN
• Shivaji Haribhau SHELKE · Jamkhed, IN
• Shridhar Reddy · Manesar, IN
• Nitin Kumar · Delhi, IN
• Madan Singh · Port Aransas, US

Key dates

• Filing date: Nov 24, 2016
• Grant date: Sep 17, 2019
• Expiry date: Nov 24, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L5/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present application provides crystalline forms of 6-per-deoxy-6-per-chloro-γ-cyclodextrin, and polymorphs thereof. The present application also provides methods for preparing said polymorphs by dissolving 6-per-deoxy-6-per-chloro-γ-cyclodextrin in dimethylformamide and using an anti-solvent of a water/alcohol mixture.