Chemical formula: C₂₈H₄₅N₅O₁₀S₂
Imipenem, also referred to as N-formimidoyl-thienamycin, is a semi-synthetic derivative of thienamycin, the parent compound produced by the filamentous bacterium Streptomyces cattleya. Imipenem exerts its bactericidal activity by inhibiting bacterial cell wall synthesis in Gram-positive and Gram-negative bacteria through binding to penicillin-binding proteins (PBPs). Cilastatin sodium is a competitive, reversible and specific inhibitor of dehydropeptidase-I, the renal enzyme which metabolizes and inactivates imipenem. It is devoid of intrinsic antibacterial activity and does not affect the antibacterial activity of imipenem.
This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:
| ATC code | Group title | Classification |
|---|---|---|
| J01DH51 | Imipenem and enzyme inhibitor | J Antiinfectives for systemic use → J01 Antibacterials for systemic use → J01D Other beta-lactam antibacterials → J01DH Carbapenems |
Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):
| Title | Information Source | Document Type | |
|---|---|---|---|
| IMIPENEM AND CILASTATIN Powder for solution for injection | FDA, National Drug Code (US) | MPI, US: SPL/PLR | |
| PRIMAXIN IV Powder for solution for infusion | Medicines & Healthcare Products Regulatory Agency (GB) | MPI, EU: SmPC |
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