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. 2016 Dec 14;21(12):1712. doi: 10.3390/molecules21121712

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© 2016 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Fourier transform infrared (FTIR) spectra for crystalline and amorphous samples of pure active ingredients and amorphous 1:1 mixture for the systems (a) cimetidine–nifedipine and (b) carvedilol–nimesulide.