Pharmaceutical aerosol formulations for pressurized metered dose inhalers comprising a chelating agent

Pharmaceutical aerosol formulations for pressurized metered dose inhalers comprising a chelating agent

  • CN 101,119,706 B
  • Filed: 02/13/2006
  • Issued: 04/17/2013
  • Est. Priority Date: 02/25/2005
  • Status: Active Grant
First Claim
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1. aerosol formulations, it consists of the following composition:

  • the HFA propellant of the active component of at least a 20-of being selected from ketosteroid, liquefaction, be selected from the cosolvent of the acceptable alcohol of pharmacy and be selected from phosphoric acid and the chelating agen of sulphuric acid, described chelating agen has improved the chemical stability of active component.

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