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Solid Forms of Tenofovir Disoproxil Fumarate, Their Mutual Conversion, and Stabilization of Form I in Formulation
V. Sládková, O. Dammer, B. Kratochvíl,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- difrakce rentgenového záření metody MeSH
- koncentrace vodíkových iontů MeSH
- látky proti HIV chemie metabolismus MeSH
- pomocné látky chemie metabolismus MeSH
- příprava léků metody MeSH
- stabilita léku MeSH
- tenofovir chemie metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Tenofovir disoproxil fumarate (TDF, form I) is an orally delivered pharmaceutical salt used for the treatment of HIV and chronic hepatitis, which acts as an inhibitor of nucleotide reverse transcriptase. There are many solid forms of TDF described in the literature; 2 of them were identified in the drug products: form I and form A. It seems that during formulation, the active pharmaceutical ingredient undergoes partial to total conversion of TDF form I to TDF form A. The goals of this study were to investigate when and why did the conversion occur and whether the conversion could be avoided and how. The influence of pH and possible interaction with excipients were studied. The conditions enabling using wet granulation in technology while preventing the undesired conversion were found. The stabilization was achieved either by replacement of used disintegrants or by acid addition to the current composition of formulation.
Citace poskytuje Crossref.org
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