SPL Set ID: 3989d30d-56e5-4e8d-9379-c30fecc894f2

Methotrexate is a folate analog metabolic inhibitor with the chemical name of N -[4-[[(2,4-diamino-6-pteridinyl) methyl]methylamino]benzoyl]-L-glutamic acid and a molecular weight of 454.44. The molecular formula is C 20 H 22 N 8 O 5 and the structural formula is shown below: Preservative-free Methotrexate Injection, USP is supplied in sterile single-dose vials for intravenous, intramuscular, subcutaneous, or intrathecal use. Methotrexate Injection, USP, Isotonic Liquid, Preservative Free is available in 25 mg/mL, 2 mL (50 mg), 4 mL (100 mg), 8 mL (200 mg), and 10 mL (250 mg) single-dose vials. Each 25 mg/mL, 2 mL vial contains 50 mg methotrexate, USP equivalent to 54.8 mg of methotrexate sodium, and the following inactive ingredients: sodium chloride 9.8 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust the pH to 8.5. The 2 mL solution contains approximately 0.43 mEq of sodium per vial and is an isotonic solution. Each 25 mg/mL, 4 mL vial contains 100 mg methotrexate, USP equivalent to 109.7 mg of methotrexate sodium, and the following inactive ingredients: sodium chloride 19.6 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust the pH to 8.5. The 4 mL solution contains approximately 0.86 mEq of sodium per vial and is an isotonic solution. Each 25 mg/mL, 8 mL vial contains 200 mg methotrexate, USP equivalent to 219.3 mg of methotrexate sodium, and the following inactive ingredients: sodium chloride 39.2 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust the pH to 8.5. The 8 mL solution contains approximately 1.72 mEq of sodium per vial and is an isotonic solution. Each 25 mg/mL, 10 mL vial contains 250 mg methotrexate, USP equivalent to 274.2 mg of methotrexate sodium, and the following inactive ingredients: sodium chloride 49 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust the pH to 8.5. The 10 mL solution contains approximately 2.15 mEq of sodium per vial and is an isotonic solution. Chemical Structure