SPL Set ID: 256264b1-ddf6-42b7-8a09-194fffea65e2

Norepinephrine (sometimes referred to as l-arterenol/Levarterenol or l-norepinephrine ) is a sympathomimetic amine which differs from epinephrine by the absence of a methyl group on the nitrogen atom. Norepinephrine Bitartrate is (-)-α-(aminomethyl)-3,4-dihydroxybenzyl alcohol tartrate (1:1) (salt) monohydrate and has the following structural formula: Norepinephrine bitartrate, USP is a white to faintly grey powder with a molecular formula of C 8 H 11 NO 3 •C 4 H 6 O 6 •H 2 O, and a molecular weight of 337.28 g/mol. It is freely soluble in water, slightly soluble in alcohol, practically insoluble in chloroform and in ether. Norepinephrine bitartrate injection, USP is a clear, colorless or practically colorless to slightly yellow color liquid and supplied in sterile aqueous solution in the form of the bitartrate salt to be administered by intravenous infusion following dilution. Each mL contains the equivalent of 1 mg base of norepinephrine, sodium chloride for isotonicity, and not more than 0.2 mg of sodium metabisulfite as an antioxidant. It has a pH of 3 to 4.5. The air in the vials has been displaced by nitrogen gas. 10