Biological Activity
Potent muscarinic receptor antagonist. Inhibits electrical field stimulation-induced contraction of guinea pig trachea in vitro (IC50 = 0.17 nM). Induces smooth muscle relaxation and bronchodilation.
Technical Data
| M. Wt | 472.42 |
| Formula | C19H22BrNO4S2 |
| Storage | Store at +4°C |
| Purity | ≥98% (HPLC) |
| CAS Number | 136310-93-5 |
| PubChem ID | 5487426 |
| InChI Key | DQHNAVOVODVIMG-RGECMCKFSA-M |
| Smiles | C[N+]1(C)[C@]2([H])[C@H]3[C@H](O3)[C@@]1([H])C[C@@H](OC(C(C4=CC=CS4)(O)C5=CC=CS5)=O)C2.[Br-] |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Solubility Data
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 47.24 | 100 | |
| water | 9.45 | 20 |
Preparing Stock Solutions
The following data is based on the product molecular weight 472.42. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 2.12 mL | 10.58 mL | 21.17 mL |
| 5 mM | 0.42 mL | 2.12 mL | 4.23 mL |
| 10 mM | 0.21 mL | 1.06 mL | 2.12 mL |
| 50 mM | 0.04 mL | 0.21 mL | 0.42 mL |
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References
References are publications that support the products' biological activity.
Takahashi et al (1994) Effect of Ba 679 BR, a novel long-acting anticholinergic agent, on cholinergic neurotransmission in guinea pig and human airways. Am.J.Respir.Crit.Care Med. 150 1640 PMID: 7952627
Smit et al (2014) Bronchoprotection by olodaterol is synergistically enhanced by tiotropium in a guinea pig model of allergic asthma. J.Pharmacol.Exp.Ther. 348 303 PMID: 24307202
Ogoda et al (2011) Comparative characterization of lung muscarinic receptor binding after intratracheal administration of tiotropium, ipratropium, and glycopyrrolate. J.Pharm.Sci. 115 374 PMID: 21358117
Keywords: Tiotropium bromide, supplier, Ba679BR, potent, muscarinic, receptors, antagonists, M1, M2, M3, M4, Ba, 679, BR, Non-selective, Muscarinics, Non-selective, Muscarinics, Tocris Bioscience
