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HFA 134a

Known as: HFA-134a, hydrofluoroalkane-134a 
 
National Institutes of Health

Papers overview

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Highly Cited
2010
Highly Cited
2010
PurposeTo develop a unique in vitro aqueous fluid-capacity-limited dissolution system for the kinetic assessment of respirable… Expand
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2008
2008
  • H. Smyth
  • AAPS PharmSciTech
  • 2008
  • Corpus ID: 25494344
The purpose of this research was to investigate the measurement and in vitro delivery implications of multimodal distributions… Expand
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Highly Cited
2005
Highly Cited
2005
Inflammation in asthma extends into the small airways (< 2 mm diameter). Most inhaled corticosteroids are suspensions with a… Expand
Highly Cited
2001
Highly Cited
2001
This paper describes a technique that uses a well-defined human airway replica and gamma counting as a standard method for… Expand
Highly Cited
2000
Highly Cited
2000
HFC 134a (1,1,1,2-tetrafluoroethane) and HFC 227 (1,1,1,2,3,3, 3-heptafluoropropane) are used to replace chlorofluorocarbons… Expand
Highly Cited
1999
Highly Cited
1999
BACKGROUND This study tested the hypothesis that there would be improved asthma control with increasing doses of beclomethasone… Expand
Highly Cited
1998
Highly Cited
1998
Hydrofluoroalkane-134a (HFA) beclomethasone dipropionate (BDP) was formulated in a metered-dose inhaler (MDI) to deliver a… Expand
Highly Cited
1998
Highly Cited
1998
The mandatory requirement to eliminate chlorofluorocarbons (CFCs) as propellants in pharmaceutical aerosols has provided the… Expand
Highly Cited
1998
Highly Cited
1998
Herein we assess the safety of an inhaled formulation of beclomethasone dipropionate (BDP) which uses the propellant… Expand
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1989
1989
The thermodynamic properties of R134a and R123 are formulated using a modified Benedict-Webb-Rubin (MBWR) equation of state fit… Expand