SPL Set ID: dbf1e4c7-7c0c-4f2f-8cad-96bc6b800cfc
1 drug(s) with this SPL Set ID
Labetalol hydrochloride is an adrenergic receptor blocking agent that has both selective alpha 1 - and nonselective beta-adrenergic receptor blocking actions in a single substance. Labetalol hydrochloride is a racemate, chemically designated as 5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl) amino]ethyl]salicylamide monohydrochloride and has the following structural formula: Labetalol hydrochloride has the molecular formula C 19 H 24 N 2 O 3 • HCl and a molecular weight of 364.87 g/mol. It has two asymmetric centers and therefore exists as a molecular complex of two diastereoisomeric pairs. Dilevalol, the R,R' stereoisomer, makes up 25% of racemic labetalol. Labetalol hydrochloride, USP is a white to off-white powder, sparingly soluble in water and in ethanol (96%), practically insoluble in methylene chloride. Labetalol hydrochloride injection, USP is a clear, colorless to light yellow aqueous sterile isotonic solution for intravenous injection. It has a pH range of 3.0 to 4.5. Each mL contains 5 mg labetalol hydrochloride, USP; 45 mg anhydrous dextrose; 0.1 mg edetate disodium; 0.8 mg methylparaben and 0.1 mg propylparaben as preservatives; citric acid monohydrate and sodium hydroxide, as necessary, to bring the solution into the pH range. 1