The molecule is a hydrate which is the hemiheptahydrate of anhydrous dantrolene sodium. It has a role as a muscle relaxant. It contains a dantrolene sodium (anhydrous).
disodium;3-[(E)-[5-(4-nitrophenyl)furan-2-yl]methylideneamino]-2-oxo-4H-imidazol-5-olate;heptahydrate