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- W1994051520 abstract "Abstract Anhydrous digoxin, digoxin · 1 4 H 2 O and digoxin · 1 2 H 2 O were characterized using X-ray powder diffractometry, diffuse reflectance Fourier transform infrared spectroscopy, intrinsic dissolution rates and scanning electron microscopy. X-ray powder diffraction patterns for the different forms showed small differences in the D values and intensities; differences were found in the ratio of the diffraction bands at 2θ ≈ 16.7, 17.9 and 14.6°. FTIR positions were the same for the different forms. Initial dissolution rates were in the order of anhydrous ⪢ digoxin · 1 4 H 2 O ⪢ digoxin · 1 2 H 2 O ; both anhydrous digoxin and digoxin · 1 4 H 2 O converted to the hemihydrate over a period of 2 h. There is evidence that at least one higher hydrate of digoxin exists. Digoxin · 1 4 H 2 O consisted mainly of thin plates and digoxin · 1 2 H 2 O was relatively large crystals arranged in clusters as seen on SEM photomicrographs." @default.
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- W1994051520 date "1992-05-01" @default.
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- W1994051520 title "Non-thermal methods in characterization of anhydrous digoxin and two digoxin hydrates" @default.
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- W1994051520 doi "https://doi.org/10.1016/0378-5173(92)90175-2" @default.
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