CAS No. 5875-06-9

Batch: Purity:99.60
Proparacaine HCl Chemical Structure
Chemical Structure
Check the Proparacaine HCl product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 5875-06-9
Molecular Formula

C16H26N2O3.HCl

Molecular Weight (MW) 330.85
SMILES CCCOC1=C(C=C(C=C1)C(=O)OCCN(CC)CC)N.Cl

Ordering Information

Biological Activity

Proparacaine HCl (Proxymetacaine Hydrochloride) is a local anesthetic that acts as a voltage-gated sodium channel antagonist. By blocking neuronal sodium channels, it prevents the influx of sodium ions required for membrane depolarization, thereby inhibiting nerve impulse initiation and conduction. This blockade of sensory neurotransmission produces rapid and reversible local analgesia and loss of sensation in target neuronal tissues. [1][2]

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 66 mg/mL
DMSO 12 mg/mL (36.27 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in 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).

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