Levobupivacaine is the S-enantiomer of bupivacaine and a long-acting amide-type local anesthetic. It produces reversible nerve conduction blockade by inhibiting voltage-gated sodium channels in neuronal membranes.
Levobupivacaine is used in regional and local anesthesia, including epidural, peripheral nerve block, infiltration and other regional anesthetic procedures.
Levobupivacaine is a specialized local anesthetic pharmaceutical API requiring controlled chemical synthesis, purification and stereochemical characterization.
Important quality attributes include identity, assay, related substances, enantiomeric purity, water content, residual solvents, elemental impurities and stability.
CAS Number: 27262-48-2
Molecular Formula: C18H28N2O
Molecular Weight: 288.43 g/mol
Drug Class: Local Anesthetic
Pharmacological Class: Amide Local Anesthetic
Therapeutic Class: Local / Regional Anesthetic
Therapeutic Area: Anesthesiology / Pain Management
Levobupivacaine blocks voltage-gated sodium channels in nerve-cell membranes.
By reducing sodium-ion influx, it prevents the generation and propagation of action potentials along peripheral nerves. This produces reversible loss of sensory and, at higher concentrations, motor nerve conduction.
Levobupivacaine is used for regional anesthesia, including:
Levobupivacaine is the S(-)-enantiomer of bupivacaine. Control of stereochemical purity is therefore an important aspect of API quality because the enantiomeric composition can influence pharmacological and safety characteristics.
Typical API manufacturing may involve:
Levobupivacaine API quality evaluation may include:
Levobupivacaine should be stored in a tightly closed container under controlled pharmaceutical storage conditions, protected from excessive heat, moisture and direct light. Final storage requirements should be established through validated stability studies.
Levobupivacaine is relevant to research involving:
| Parameter | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 1.0% |
| Residue on Ignition | NMT 0.5% |
| Individual Impurity | ≤ 0.5% |
| Total Impurities | ≤ 1.5% |
| Water Content | NMT 1.0% |