NAVELBINE (vinorelbine tartrate) Injection is for intravenous administration. Each vial contains vinorelbine tartrate equivalent to 10 mg (1-mL vial) or 50 mg (5-mL vial) vinorelbine in Water for Injection. No preservatives or other additives are present. The aqueous solution is sterile and nonpyrogenic.
Vinorelbine tartrate is a semi-synthetic vinca alkaloid with antitumor activity. The chemical name is 3¢,4¢-didehydro-4¢-deoxy-C¢-norvincaleukoblastine [R-(R*,R*)-2,3-dihydroxybutanedioate (1:2)(salt)].
Vinorelbine tartrate has the following structure:

Vinorelbine tartrate is a white to yellow or light brown amorphous powder with the molecular formula C45H54N4O8กค2C4H6O6 and molecular weight of 1079.12. The aqueous solubility is >1,000 mg/mL in distilled water. The pH of NAVELBINE Injection is approximately 3.5.