Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape

Any time the pharmaceutical industry develops a new drug, potential polymorphic events must be thoroughly described, because in a crystalline pharmaceutical solid, different arrangements of the same active pharmaceutical ingredient can yield to very different physicochemical properties that might be...

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Main Authors: Francisco Javier Acebedo-Martínez, Carolina Alarcón-Payer, Antonio Frontera, Rafael Barbas, Rafel Prohens, Milena Di Crisci, Alicia Domínguez-Martín, Jaime Gómez-Morales, Duane Choquesillo-Lazarte
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Pharmaceutics
Subjects:
Online Access:https://www.mdpi.com/1999-4923/13/12/2140
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author Francisco Javier Acebedo-Martínez
Carolina Alarcón-Payer
Antonio Frontera
Rafael Barbas
Rafel Prohens
Milena Di Crisci
Alicia Domínguez-Martín
Jaime Gómez-Morales
Duane Choquesillo-Lazarte
author_facet Francisco Javier Acebedo-Martínez
Carolina Alarcón-Payer
Antonio Frontera
Rafael Barbas
Rafel Prohens
Milena Di Crisci
Alicia Domínguez-Martín
Jaime Gómez-Morales
Duane Choquesillo-Lazarte
author_sort Francisco Javier Acebedo-Martínez
collection DOAJ
description Any time the pharmaceutical industry develops a new drug, potential polymorphic events must be thoroughly described, because in a crystalline pharmaceutical solid, different arrangements of the same active pharmaceutical ingredient can yield to very different physicochemical properties that might be crucial for its efficacy, such as dissolution, solubility, or stability. Polymorphism in cocrystal formulation cannot be neglected, either. In this work, two different cocrystal polymorphs of the non-steroidal anti-inflammatory drug niflumic acid and caffeine are reported. They have been synthesized by mechanochemical methods and thoroughly characterized in solid-state by powder and single crystal X-ray diffraction respectively, as well as other techniques such as thermal analyses, infrared spectroscopy and computational methods. Both theoretical and experimental results are in agreement, confirming a conformational polymorphism. The polymorph NIF–CAF Form I exhibits improved solubility and dissolution rate compared to NIF–CAF Form II, although Form II is significantly more stable than Form I. The conditions needed to obtain these polymorphs and their transition have been carefully characterized, revealing an intricate system.
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spelling doaj.art-89dbc99e9187492d9c72e36752169efa2023-11-23T10:06:27ZengMDPI AGPharmaceutics1999-49232021-12-011312214010.3390/pharmaceutics13122140Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical LandscapeFrancisco Javier Acebedo-Martínez0Carolina Alarcón-Payer1Antonio Frontera2Rafael Barbas3Rafel Prohens4Milena Di Crisci5Alicia Domínguez-Martín6Jaime Gómez-Morales7Duane Choquesillo-Lazarte8Laboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, SpainServicio de Farmacia, Hospital Universitario Virgen de las Nieves, 18014 Granada, SpainDepartment of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca, SpainUnitat de Polimorfisme i Calorimetria, Centres Científics i Tecnològics, Universitat de Barcelona, Baldiri Reixac 10, 08028 Barcelona, SpainUnitat de Polimorfisme i Calorimetria, Centres Científics i Tecnològics, Universitat de Barcelona, Baldiri Reixac 10, 08028 Barcelona, SpainLaboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, SpainDepartment of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, SpainLaboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, SpainLaboratorio de Estudios Cristalográficos, IACT, CSIC-Universidad de Granada, Avda. de las Palmeras 4, 18100 Armilla, SpainAny time the pharmaceutical industry develops a new drug, potential polymorphic events must be thoroughly described, because in a crystalline pharmaceutical solid, different arrangements of the same active pharmaceutical ingredient can yield to very different physicochemical properties that might be crucial for its efficacy, such as dissolution, solubility, or stability. Polymorphism in cocrystal formulation cannot be neglected, either. In this work, two different cocrystal polymorphs of the non-steroidal anti-inflammatory drug niflumic acid and caffeine are reported. They have been synthesized by mechanochemical methods and thoroughly characterized in solid-state by powder and single crystal X-ray diffraction respectively, as well as other techniques such as thermal analyses, infrared spectroscopy and computational methods. Both theoretical and experimental results are in agreement, confirming a conformational polymorphism. The polymorph NIF–CAF Form I exhibits improved solubility and dissolution rate compared to NIF–CAF Form II, although Form II is significantly more stable than Form I. The conditions needed to obtain these polymorphs and their transition have been carefully characterized, revealing an intricate system.https://www.mdpi.com/1999-4923/13/12/2140cocrystal polymorphismniflumic acidcaffeineNSAIDsmechanochemical synthesis
spellingShingle Francisco Javier Acebedo-Martínez
Carolina Alarcón-Payer
Antonio Frontera
Rafael Barbas
Rafel Prohens
Milena Di Crisci
Alicia Domínguez-Martín
Jaime Gómez-Morales
Duane Choquesillo-Lazarte
Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
Pharmaceutics
cocrystal polymorphism
niflumic acid
caffeine
NSAIDs
mechanochemical synthesis
title Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
title_full Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
title_fullStr Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
title_full_unstemmed Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
title_short Novel Polymorphic Cocrystals of the Non-Steroidal Anti-Inflammatory Drug Niflumic Acid: Expanding the Pharmaceutical Landscape
title_sort novel polymorphic cocrystals of the non steroidal anti inflammatory drug niflumic acid expanding the pharmaceutical landscape
topic cocrystal polymorphism
niflumic acid
caffeine
NSAIDs
mechanochemical synthesis
url https://www.mdpi.com/1999-4923/13/12/2140
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