Hexylcaine is a synthetic local anesthetic active pharmaceutical ingredient belonging to the amino ester class of local anesthetics. It produces reversible loss of sensation by reducing the generation and transmission of nerve impulses at the site of application.
Hexylcaine is chemically identified as 2-(diethylamino)ethyl 4-hexoxybenzoate. It has the molecular formula C17H27NO3 and a molecular weight of 293.40 g/mol. Its CAS Number is 532-76-3.
Hexylcaine, also known as cyclaine, is a long-acting local anesthetic compound that was historically used in topical and regional anesthesia. It belongs to the ester-type local anesthetic group and contains a para-substituted benzoate structure linked to a diethylaminoethyl group.
Hexylcaine has been used primarily as a local anesthetic in pharmaceutical applications and is now more commonly encountered in pharmaceutical research and analytical applications.
Hexylcaine produces local anesthesia by interacting with voltage-gated sodium channels in nerve membranes.
It reduces sodium-ion influx during nerve depolarization, thereby preventing the initiation and propagation of action potentials. This temporarily blocks the transmission of sensory nerve impulses.
Hexylcaine API has applications in:
Hexylcaine is a synthetic pharmaceutical compound manufactured through controlled chemical synthesis followed by purification, drying and analytical quality testing.
Quality evaluation may include identity, assay, related substances, residual solvents, water content, residue on ignition and elemental impurities according to the applicable specification.
Hexylcaine is generally described as a white crystalline solid. The free base is a lipophilic organic compound with limited water solubility. The compound may be handled in salt form for pharmaceutical development where improved formulation characteristics are required.
Hexylcaine should be stored in a tightly closed container, protected from excessive heat, moisture and direct light. Storage should follow the manufacturer's current CoA, SDS and validated stability requirements.
Depending on the intended application, documentation may include:
| 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% |
| Individual Impurity | NMT 0.5% |
| Total Impurities | NMT 2.0% |
| Water Content | NMT 1.0% |
| Melting Point | Approximately 54–56°C |