Analysis of Aminoglycoside Antibiotics
This document details the analysis of aminoglycoside antibiotics, such as gentamicin, kanamycin, and etimicin, using High-Performance Liquid Chromatography (HPLC). The text explains that these compounds are effectively analyzed using an evaporative light scattering detector (ELSD) because they lack a chromophore, making UV detection insufficient. The application focuses on methods compliant with the Chinese Pharmacopoeia (CHP) and includes a specific measurement of etimicin in an injection formulation.
| System | Agilent 1200 Series SL, binary pump |
|---|---|
| Detector | Evaporative light scattering detector (ELSD) |
| Flow rate | 1 mL/min |
| TCC temperature | 25°C |
| ELSD temperature | 60°C |
| ELSD pressure | 3.5 bar |
ELSD is used because the aminoglycosides do not have a chromophore and UV detection provides insufficient sensitivity.
The resolution between kanamycin and its related compound kanamycin B must be greater than 5.0.
The resolution between netilmicin and etimicin must be greater than 1.20.