... Besylate EP5/ Enterprise standard Amlodipine besylate is chemically described as 3-Ethy l-5-methyl (±)-2-[(2-aminoethoxy)methyl]-4-( ... 2-chlorophenyl)-1,4-dihydro-6-methyl-3,5-pyridinedicarboxylate, monobenzenesulphonate. Its empirical formula is C20H25CIN2O5 • ... soluble in ethanol. NORVASC (amlodipine besylate) Tablets are formulated as white tablets equivalent to 2.5, 5, and 10 ...