SPL Set ID: b0075b72-c3cc-f844-e053-2a95a90a417f

Meropenem for injection is a sterile, pyrogen-free, synthetic, carbapenem antibacterial for intravenous administration. It is (4R,5S,6S)-3- [[(3S,5S)-5-(Dimethylcarbamoyl)-3-pyrrolidinyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxilic acid trihydrate. Its empirical formula is C 17 H 25 N 3 O 5 S∙3H 2 O with a molecular weight of 437.52. Its structural formula is: Meropenem for injection is a white to pale yellow crystalline powder. The solution varies from colorless to yellow depending on the concentration. The pH of freshly constituted solutions is between 7.3 and 8.3. Meropenem is soluble in 5% monobasic potassium phosphate solution, sparingly soluble in water, very slightly soluble in hydrated ethanol, and practically insoluble in acetone or ether. When re-constituted as instructed, each 1 gram meropenem for injection vial will deliver 1 gram of meropenem and 90.2 mg of sodium as sodium carbonate (3.92 mEq). Each 500 mg meropenem for injection vial will deliver 500 mg meropenem and 45.1 mg of sodium as sodium carbonate (1.96 mEq) [ see Dosage and Administration (2.4) ] . Chemical Structure