The chemical Dantrolene sodium has a designated molecular formula of C14H9N4NaO5 and a molecular weight of 336.239 g/mol. Synonyms may include: EINECS 238-706-8, 2,4-Imidazolidinedione, 1-(((5-(4-nitrophenyl)-2-furanyl)methylene)amino)-, sodium salt, 1-((5-(p-Nitrophenyl)furfurylidene)amino)hydantoin sodium, Sodium dantrolene, Dantrium, UNII-28F0G1E0VF (ChemID).