CAS No. 1173-88-2
Batch:
Purity:99.69
Chemical Structure
Check the
Oxacillin sodium
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| IUPAC Name | sodium (2S,5R,6R)-3,3-dimethyl-6-[(5-methyl-3-phenyl-1,2-oxazole-4-carbonyl)amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate | |
|---|---|---|
| CAS Number | 1173-88-2 | |
| Molecular Formula |
C19H18N3NaO5S |
|
| Molecular Weight (MW) | 423.42 | |
| SMILES | [Na+].CC1=C(C(=O)NC2C3SC(C)(C)C(N3C2=O)C([O-])=O)C(=NO1)C4=CC=CC=C4 | |
| InChIKey | VDUVBBMAXXHEQP-SLINCCQESA-M |
Oxacillin sodium is a narrow-spectrum β-lactam antibiotic that targets penicillin-binding proteins (PBPs) involved in bacterial cell wall synthesis. By binding to PBPs, oxacillin inhibits the transpeptidase-catalyzed cross-linking of peptidoglycan chains within the bacterial cell wall, compromising structural integrity and leading to osmotic cell lysis in sensitive strains such as Staphylococcus aureus. [1]
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Concentration
Volume
Mass
|
|---|
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
85 mg/mL
(200.74 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | 85 mg/mL |
| Ethanol | 8 mg/mL |
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
- Preheat media/saline to 37°C.
- Mix rapidly (pipette/vortex) upon addition.
- For complex mixes, always add the aqueous phase last.
- Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Note: Technical data last updated: Sep 1, 2026.