The effects of cis and trans butenedioic acid on the physicochemical behavior of lumefantrine

TitleThe effects of cis and trans butenedioic acid on the physicochemical behavior of lumefantrine
Publication TypeJournal Article
Year of Publication2022
AuthorsTomar, D, Lodagekar, A, Gunnam, A, Allu, S, Chavan, RB, Tharkar, M, Ajithkumar, TG, Nangia, AK, Shastri, NR
JournalCrystengcomm
Volume24
Issue1
Pagination156-168
Date PublishedJAN
Type of ArticleArticle
AbstractThe present work investigates the effects of cis and trans butenedioic acid isomers (maleic acid and fumaric acid) on the crystallinity and pharmaceutical behavior of lumefantrine. Differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), attenuated total reflectance infrared spectroscopy (ATR-IR), solid-state nuclear magnetic resonance spectroscopy (ss-NMR), and single-crystal X-ray diffraction (SC-XRD) studies were employed. Lumefantrine-fumaric acid crystallized as a salt in the monoclinic space group P2(1)/c. In comparison, DSC and PXRD showed the formation of a co-amorphous solid with maleic acid. Complete proton transfer with a strong ionic interaction led to crystalline salt formation with the trans isomer, whereas weaker/fewer hydrogen bonds with the cis isomer of butenedioic acid led to a co-amorphous salt. The in vitro dissolution of both salts resulted in a similar 2.6-2.7-fold improvement in dissolution rate when compared to that of the crystalline lumefantrine. The crystalline and co-amorphous salts were stable under accelerated stability conditions (40 +/- 2 degrees C and 75 +/- 5% RH) for one month.
DOI10.1039/d0ce01709d
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.545
Divison category: 
Physical and Materials Chemistry

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