Molecular Weight: 303.2 g/mol

Neostigmine Bromide Chemical Structure
Chemical Structure
Check the Neostigmine Bromide 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 60 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).

Aliquotting Service

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Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

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Chemical Information

IUPAC Name [3-(dimethylcarbamoyloxy)phenyl]-trimethylazanium bromide
CAS Number 114-80-7
Molecular Formula

C12H19N2O2.Br
Molecular Weight (MW) 303.2
SMILES CN(C)C(=O)OC1=CC=CC(=C1)[N+](C)(C)C.[Br-]
InChIKey LULNWZDBKTWDGK-UHFFFAOYSA-M

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