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A new dosage form of Trinitroglycerin (TNG) in the form of microcapsules, yet unreported in the literature, was developed at our laboratory. This formulation is expected to overcome the problem of volatility and instability of TNG. This study was conducted in two parts. In the first part, the formulation of microcapsules of Nitroglycerin was accomplished along with recovery procedures from which a suitable recovery method was developed (lyophilization). In the second part stability studies were conducted under high vacuum (< 1 mM Hg), and various conditions of temperature and humidity. A sensitive HPLC method that allows the separation of Nitroglycerin …
