dalbavancin hydrochloride - Generic Medications

Dalbavancin for injection is a lipoglycopeptide antibacterial synthesized from a fermentation product of Nonomuraea species. Dalbavancin is a mixture of five closely related active homologs (A 0 , A 1 , B 0 , B 1 , and B 2 ); the component B 0 is the major component of dalbavancin. The homologs share the same core structure and differ in the fatty acid side chain of the N-acylaminoglucuronic acid moiety (R 1 ) structure and/or the presence of an additional methyl group (R 2 ) on the terminal amino group (shown in the Figure 1 and Table 3 below). Figure 1. Dalbavancin Structural Formula Table 3. Substitution Patterns for Dalbavancin API Homologs * Anhydrous free base Dalbavancin R 1 R 2 Molecular Formula Molecular Weight * A 0 CH(CH 3 ) 2 H C 87 H 98 N 10 O 28 Cl 2 · 1.6 HCl 1,802.7 A 1 CH 2 CH 2 CH 3 H C 87 H 98 N 10 O 28 Cl 2 · 1.6 HCl 1,802.7 B 0 CH 2 CH(CH 3 ) 2 H C 88 H 100 N 10 O 28 Cl 2 · 1.6 HCl 1,816.7 B 1 CH 2 CH 2 CH 2 CH 3 H C 88 H 100 N 10 O 28 Cl 2 · 1.6 HCl 1,816.7 B 2 CH 2 CH(CH 3 ) 2 CH 3 C 89 H 102 N 10 O 28 Cl 2 · 1.6 HCl 1,830.7 The B 0 INN chemical name is: 5,31-dichloro-38-de(methoxycarbonyl)-7-demethyl-19-deoxy-56-O- [2-deoxy-2-[(10-methylundecanoyl)amino]-β-D-glucopyranuronosyl]-38-[[3-(dimethylamino)propyl] carbamoyl]-42-O-α-D-mannopyranosyl-15-N-methyl(ristomycin A aglycone) hydrochloride. Dalbavancin for injection is supplied in clear glass vials as a sterile, lyophilized, preservative-free, white to off-white to pale yellow solid. Each vial contains dalbavancin HCl equivalent to 500 mg of dalbavancin as the free base, plus lactose monohydrate (129 mg) and mannitol (129 mg) as excipients. Sodium hydroxide or hydrochloric acid may be added to adjust the pH at the time of manufacture. The powder is to be reconstituted and further diluted for IV infusion [ see Dosage and Administration ( 2.4 ), How Supplied/Storage and Handling ( 16 )] . Figure 1. Dalbavancin Structural Formula