Abstract
Study of excipients incompatibility with drugs in an early phase of pharmaceutical development is still a persistent difficulty within the pharmaceutical industry. We examine here the compatibility between an experimental drug (nebicapone) and common excipients using differential scanning calorimetry (DSC), high sensitivity DSC (HSDSC) and a conventional heat stress test. The results obtained indicate that nebicapone may be compatible with lactose monohydrate and sodium croscarmellose but is incompatible with magnesium stearate. This study concludes that HSDSC, in stepwise isothermal mode, may be used as a potential tool for detecting excipient incompatibilities.
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