Spoletti E, Verma V, Cappuccino C, Lusi M. Solid solution polymorphs afford two highly soluble co-drug forms of tolbutamide and chlorpropamide.
Chem Commun (Camb) 2023;
59:14321-14324. [PMID:
37971413 DOI:
10.1039/d3cc04725c]
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Abstract
The search for solid solutions of class-two insulin secretagogues, tolbutamide and chlorpropamide, reveals a rare case of monotropic polymorphism for the mixed crystals. At any stoichiometry, two crystal forms are isolated that are kinetically stable at room temperature from a few months to over a year. Dissolution tests certify the solubility advantage of the solid solutions over the pure drugs as well as their physical mixture, suggesting a potential application as a highly soluble co-drug formulation.
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