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- W2034871573 abstract "Progesterone is a natural hormone steroid used in humans for several treatments and in livestock for artificial insemination, which exhibits two polymorphic forms at ambient conditions: form 1 and form 2. Form 2 is metastable and more soluble than form 1; however, it is not suitable to use as powder raw material because it transforms into form 1 by the effects of grinding. A polymorphic screening of progesterone based on polymer-induced heteronucleation method was performed as an alternative to prepare the metastable form. Polyvinyl alcohol, hydroxypropyl methylcellulose (HPMC), dextran, gelatin, polyisoprene (PI) and acrylonitrile-butadiene (NBR) copolymer were used. Crystals were prepared from 0.5, 10 and 40 mg/mL solutions in acetone at room temperature by solvent evaporation. The samples were characterized by X-ray powder diffraction, differential scanning calorimetry (DSC), scanning electron microcopy and attenuated total reflectance infrared Fourier transform spectroscopy. Form 1 was nucleated from 40 mg/mL solutions on the six polymers and from 10 mg/mL solutions on PI and NBR. The mixture of form 1 and form 2 was obtained from 10 mg/mL solution on HPMC, dextran and gelatin and from 0.5 mg/mL solution crystallizations. Therefore, the polymeric devices, which crystallized the metastable and more soluble polymorph (2) of progesterone, would be a promissory alternative for the pharmaceutical applications." @default.
- W2034871573 created "2016-06-24" @default.
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- W2034871573 date "2014-04-24" @default.
- W2034871573 modified "2023-10-16" @default.
- W2034871573 title "Crystallization of progesterone polymorphs using polymer-induced heteronucleation (PIHn) method" @default.
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- W2034871573 doi "https://doi.org/10.3109/03639045.2014.909839" @default.
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