The chemical Efonidipine Hydrochloride has a designated molecular formula of C34H39ClN3O7P and a molecular weight of 668.124 g/mol. Synonyms may include: CCRIS 4065, Efonidipine HCl, UNII-3BR983K69O (ChemID). Efonidipine Hydrochloride has been assigned a MeSH pharmacological action of: Calcium Channel Blockers.