Patent · US Active

Method of preparing itraconazole preparation

US10258574B2 · kind B2 · utility

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6Claims
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Key dates

Filing dateSep 8, 2015
Grant dateApr 16, 2019
Priority date
Expiry dateJan 5, 2036

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61P33/02
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

A method for preparing an itraconazole formulation including: dissolving a mixture of itraconazole and L-ascorbic acid with a mixed solvent of dichloromethane and methanol, adding a hydroxypropyl methylcellulose and a pluronic F-127 and then dichloromethane into the mixed solvent to obtain a raw material solution; feeding a carbon dioxide into a crystallization autoclave in a supercritical fluid crystallization equipment system through a pressure regulating valve; spraying the solution into the crystallization autoclave via a spray nozzle, separating out composite particles from the solution and collecting the composite particles at a bottom of the crystallization autoclave, and encapsulating the composite particles to obtain a itraconazole formulation with decreased particle size and increased bioavailability.

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