Amorphous Besifloxacin Solid

Amorphous Besifloxacin Solid

Amorphous solid-state form of (R)-(+)-7-(3-amino-2,3,4,5,6,7-hexahydro-1H-azepin-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid is characterized by at least one of: (a) an X-ray powder diffraction ("XRPD") spectrum that comprises peaks at 2 angles of 6.9-7.1, 9.4, 10.6-10.7, and 13.4-1...

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Hauptverfasser: SHAWER MOHANNAD, KING, JR. HARRY M, PHILLIPS ERIC
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Sprache:eng
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CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator SHAWER MOHANNAD
KING, JR. HARRY M
PHILLIPS ERIC
description Amorphous solid-state form of (R)-(+)-7-(3-amino-2,3,4,5,6,7-hexahydro-1H-azepin-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid is characterized by at least one of: (a) an X-ray powder diffraction ("XRPD") spectrum that comprises peaks at 2 angles of 6.9-7.1, 9.4, 10.6-10.7, and 13.4-13.7°±0.2°, and a diffuse halo pattern at 11-30°; and (b) a DSC (differential scanning calorimetry) melting peak at about 267-272° C. The amorphous solid is prepared by rapid precipitation from a saturated or supersaturated solution of besifloxacin free base in a solvent comprising at least benzyl alcohol.
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subjects CHEMISTRY
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METALLURGY
ORGANIC CHEMISTRY
title Amorphous Besifloxacin Solid
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