Overview
Novobiocin is an aminocoumarin-class antibiotic first isolated from Streptomyces niveus in the 1950s. It gained FDA approval for clinical use against staphylococcal infections but was later replaced by less toxic alternatives. Today, it remains valuable in research due to its specific inhibition of bacterial DNA gyrase. As a B2B product, novobiocin is supplied in bulk to pharmaceutical manufacturers and research institutions. Its niche applications include studying antibiotic resistance mechanisms and as a selective agent in microbiological media.
Physical and Chemical Properties
Novobiocin forms needle-like crystals with limited water solubility (0.1 mg/mL at 25°C), necessitating organic solvents for laboratory preparations. The compound exhibits UV absorption maxima at 307 nm and 340 nm, useful for analytical quantification. Chemically, it contains a coumarin core linked to a noviose sugar and a substituted benzoic acid. This structure is heat-sensitive, decomposing above 150°C without clear boiling. Stability studies recommend pH 6-8 aqueous solutions for short-term storage.
Main Applications
In clinical settings, novobiocin was historically used against penicillin-resistant Staphylococcus aureus. Current medical use is rare but persists in veterinary medicine for mastitis treatment in cattle. The primary B2B demand comes from life science research, where it serves as: 1) A tool to probe DNA supercoiling mechanisms, 2) A selective marker in genetic engineering (typically at 5-50 µg/mL concentrations), and 3) A reference compound for developing new gyrase inhibitors. Some niche industrial applications include preservation of cell culture media.
Safety and Storage
Novobiocin is classified as Hazard Category 3 (H315/H319/H335) under GHS, requiring PPE during handling. Powder forms may cause respiratory irritation; work in fume hoods for large quantities. Ethanol-based solutions are preferable to reduce dust exposure. Long-term storage requires desiccated conditions at 2-8°C. Under these conditions, manufacturers typically guarantee 2-year stability. For lab use, aliquot working solutions to minimize freeze-thaw cycles. Dispose of waste through licensed hazardous chemical collectors.
B2B Procurement Guide
When sourcing novobiocin, prioritize suppliers with: 1) cGMP certification for pharmaceutical-grade material, 2) Batch-specific COA including HPLC purity and residual solvent data, 3) Documentation of bioburden testing for sterile applications. Bulk purchases (1kg+) may offer 15-30% cost savings, but verify storage capacity. For research-grade material, expect lead times of 2-4 weeks. Consider alternate coumermycin-class compounds if requiring higher water solubility.
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