药物信息为Penicillin G Procaine Injectable SuspensionTUBEX 1 mL and 2 mLfor deep IM injection only (Monarch Pharmaceuticals, Inc.): DESCRIPTION

This product is designed to provide a stable aqueous suspension of penicillin G procaine, ready for immediate use. This eliminates the necessity for addition of any diluent, required for the usual dry formulation of injectable penicillin.

Penicillin G procaine is chemically designated as (2S, 5R, 6R)-3,3-Dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid compound with 2-(diethylamino) ethyl p-aminobenzoate (1:1) monohydrate.

Its molecular formula is C₁₆H₁₈N₂O₄S•C₁₃H₂₀N₂O₂•H₂O with a molecular weight of 588.72. Its structural formula is as follows:

Each TUBEX^®; Sterile Cartridge-Needle Unit, 1,200,000 units (2 mL size) or 600,000 units (1 mL size), contains penicillin G procaine in a stabilized aqueous suspension with sodium citrate buffer; and as w/v, approximately 0.5% lecithin, 0.5% carboxymethylcellulose, 0.5% povidone, 0.1% methylparaben, and 0.01% propylparaben.

Penicillin G Procaine Injectable Suspension in the TUBEX formulation is viscous and opaque. Read CONTRAINDICATIONS, WARNINGS, PRECAUTIONS, and DOSAGE AND ADMINISTRATION sections prior to use.