Sonata Ingredients and Composition
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Sonata Ingredients and Composition
Zaleplon, the active Sonata ingredient, is a nonbenzodiazepine hypnotic from the pyrazolopyrimidine class. The chemical name of zaleplon is N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide. Its empirical formula is C17H15N5O, and its molecular weight is 305.34.
Zaleplon is a white to off-white powder that is practically insoluble in water and sparingly soluble in alcohol or propylene glycol. Its partition coefficient in octanol/water is constant (log PC = 1.23) over the pH range of 1 to 7.
Sonata capsules contain zaleplon as the active ingredient. Inactive ingredients consist of:
- microcrystalline cellulose
- pregelatinized starch
- silicon dioxide
- sodium lauryl sulfate
- magnesium stearate
- lactose
- gelatin
- titanium dioxide
- D&C yellow #10
- FD&C blue #1
- FD&C green #3
- FD&C yellow #5
