SPL Set ID: f12fb0fd-fa05-49fc-b5e3-a2050b816ef2

Esmolol hydrochloride is a beta adrenergic receptor blocker with a very short duration of action (elimination half-life is approximately 9 minutes). Esmolol Hydrochloride is: (±)-Methyl p-[2-hydroxy-3-(isopropylamino) propoxy] hydrocinnamate hydrochloride and has the following structure: Esmolol hydrochloride has the empirical formula C 16 H 26 NO 4 Cl and a molecular weight of 331.8. It has one asymmetric center and exists as an enantiomeric pair. Esmolol hydrochloride is a white to off-white crystalline powder. It is a relatively hydrophilic compound which is very soluble in water and freely soluble in alcohol. Its partition coefficient (octanol/water) at pH 7.0 is 0.42 compared to 17.0 for propranolol. Structural Formula 11.1 Esmolol Hydrochloride in Sodium Chloride Injection Dosage Forms All Esmolol Hydrochloride in Sodium Chloride Injection presentations are clear, colorless to light yellow, sterile, nonpyrogenic, iso-osmotic solutions of esmolol hydrochloride in sodium chloride. The formulations for Esmolol Hydrochloride in Sodium Chloride Injection and Esmolol Hydrochloride in Sodium Chloride Injection, Double Strength, are described in the table below: Table 4 Esmolol Hydrochloride in Sodium Chloride Injection Formulations Q.S. = Quantity Sufficient Esmolol Hydrochloride in Sodium Chloride Injection Esmolol Hydrochloride in Sodium Chloride Injection - Double Strength Esmolol Hydrochloride, USP 10 mg per mL 20 mg per mL Sodium Chloride, USP 5.9 mg per mL 4.1 mg per mL Water for Injection, USP Q.S. to volume of 250 mL Q.S. to volume of 100 mL Sodium Acetate Trihydrate, USP 2.8 mg per mL 2.8 mg per mL Glacial Acetic Acid, USP 0.546 mg per mL 0.546 mg per mL Sodium Hydroxide Q.S. to adjust pH to 4.5 to 5.5 Hydrochloric Acid Q.S. to adjust pH to 4.5 to 5.5 The calculated osmolarity of Esmolol Hydrochloride in Sodium Chloride Injection and Esmolol Hydrochloride in Sodium Chloride Injection, Double Strength, is 312 mOsmol/L. The 250 mL and 100 mL flexible container bags are not made with natural rubber latex and are PVC-free and DEHP-free with dual ports. Solutions in contact with the plastic container leach out certain chemical compounds from the plastic in very small amounts; however, biological testing was supportive of the safety of the plastic container materials.