Molecular Weight: 1390.71 g/mol

Gentamicin Chemical Structure
Chemical Structure
Check the Gentamicin product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
Water 100 mg/mL
DMSO Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
Ethanol Insoluble
FAQ
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).

Chemical Information

IUPAC Name 2-[4,6-diamino-3-[3-amino-6-[1-(methylamino)ethyl]oxan-2-yl]oxy-2-hydroxycyclohexyl]oxy-5-methyl-4-(methylamino)oxane-3,5-diol
CAS Number 1403-66-3
Molecular Formula

C60H123N15O21
Molecular Weight (MW) 1390.71
SMILES CNC(C)C1CCC(N)C(O1)OC2C(N)CC(N)C(OC3OCC(C)(O)C(NC)C3O)C2O.CNC4C(O)C(OCC4(C)O)OC5C(N)CC(N)C(OC6OC(CN)CCC6N)C5O.CNC7C(O)C(OCC7(C)O)OC8C(N)CC(N)C(OC9OC(CCC9N)C(C)N)C8O
InChIKey CEAZRRDELHUEMR-UHFFFAOYSA-N

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Note: Technical data last updated: Sep 1, 2026.