original question: which drug component has [Calcium sulfide] in it?
answer: calcium, sulfate
answer type: Drug ingredient.
auxiliary information: Calcium sulfide is the chemical compound with the formula CaS. This white material crystallizes in cubes like rock salt. CaS has been studied as a component in a process that would recycle gypsum, a product of flue-gas desulfurization. Like many salts containing sulfide ions, CaS typically has an odour of H‚ÇÇS, which results from small amount of this gas formed by hydrolysis of the salt. In terms of its atomic structure, CaS crystallizes in the same motif as sodium chloride indicating that the bonding in this material is highly ionic. The high melting point is also consistent with its description as an ionic solid. In the crystal, each S2‚àí ion is surrounded by an octahedron of six Ca¬≤‚Å∫ ions, and complementarily, each Ca¬≤‚Å∫ ion surrounded by six S2‚àí ions.
[Calcium sulfide] is a principal ingredient of what drug component?