CAS No. 56776-01-3

Batch: Purity:99.9
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Tulobuterol hydrochloride Chemical Structure
Chemical Structure
Check the Tulobuterol hydrochloride product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 56776-01-3
Molecular Formula

C12H19Cl2NO
Molecular Weight (MW) 264.19
SMILES CC(C)(C)NCC(C1=CC=CC=C1Cl)O.Cl

Biological Activity

Tulobuterol hydrochloride is a long-acting β2-adrenergic receptor agonist with bronchodilatory, anti-inflammatory, and antiviral activities. Activation of the β2-adrenergic receptor stimulates adenylate cyclase to increase intracellular cAMP levels, promoting bronchial smooth muscle relaxation and inhibition of airway hyperresponsiveness. Furthermore, it suppresses inflammatory cytokine production and attenuates viral infection in airway epithelial cells, mitigating pulmonary inflammation.

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
DMSO 53 mg/mL (200.61 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 53 mg/mL
Ethanol 10 mg/mL
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.