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Co-crystal screening of diclofenac.

ABSTRACT: In the pharmaceutical industry, co-crystals are becoming increasingly valuable as crystalline solids that can offer altered/improved physical properties of an active pharmaceutical ingredient (API) without changing its chemical identity or biological activity. In order to identify new solid forms of diclofenac-an analgesic with extremely poor aqueous solubility for which few co-crystal structures have been determined-a range of pyrazoles, pyridines, and pyrimidines were screened for co-crystal formation using solvent assisted grinding and infrared spectroscopy with an overall success rate of 50%. The crystal structures of three new diclofenac co-crystals are reported herein: (diclofenac)?(2-aminopyrimidine), (diclofenac)?(2-amino-4,6-dimethylpyrimidine), and (diclofenac)?(2-amino-4-chloro-6-methylpyrimidine).

SUBMITTER: Aakeroy CB

PROVIDER: S-EPMC3857085 | biostudies-other | 2011

REPOSITORIES: biostudies-other

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Co-crystal screening of diclofenac.

Aakeröy Christer B CB Grommet Angela B AB Desper John J

Pharmaceutics 20110831 3

In the pharmaceutical industry, co-crystals are becoming increasingly valuable as crystalline solids that can offer altered/improved physical properties of an active pharmaceutical ingredient (API) without changing its chemical identity or biological activity. In order to identify new solid forms of diclofenac-an analgesic with extremely poor aqueous solubility for which few co-crystal structures have been determined-a range of pyrazoles, pyridines, and pyrimidines were screened for co-crystal f ...[more]

PMID: 24310599

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