Homatropine Methylbromide

Catalog No.S4024 Batch:S402401

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Technical Data

Formula

C17H24NO3.Br

Molecular Weight 370.28 CAS No. 80-49-9
Solubility (25°C)* In vitro DMSO 74 mg/mL (199.84 mM)
Water 74 mg/mL (199.84 mM)
Ethanol 10 mg/mL (27.0 mM)
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description Homatropine Methylbromide is muscarinic AChR antagonist, inhibits endothelial and smooth muscle muscarinic receptors of WKY-E and SHR-E with IC50 of 162.5 nM and 170.3 nM, respectively.
Targets
mAChR (WKY-E) [1] mAChR (SHR-E) [1]
162.5 nM 170.3 nM
In vitro Homatropine (20 μM) alone produces a dose ratio of 259 in atrium from guinea-pigs. Homatropine (20 μM) produces a dose ratio of only 95.0 when combined with hexamethonium in atrium from guinea-pigs. [2] Homatropine has similar affinities for muscarinic receptors in stomach (pA2 = 7.13) and for those in atria mediating force (pA2 = 7.21) and rate (pA2 = 7.07) responses. [3]
In vivo Homatropine (20 mg/kg) prevents lethality in rats with dichlorvos poisoning with survive rate of 30% and time of death ranged between 4 and 12 minutes, while Homatropine (10 mg/kg) has no effect on preventing lethality. [4] Homatropine [14C]methylbromide administrated rectal achieves higher and rapid peak plasma concentrations than by the other routes in rats whether HMB-14C is administered in a water-soluble suppository base or in aqueous solution, retained 28% of the 14C has been excreted in the urine while 56% remained in the large intestine after 12 hours. Unlabelled Homatropine methylbromide, given in rectal suppositories to anaesthetized rats, causes prompt blockade of the effects of vagal stimulation on pulse rate and of intravenous acetylcholine on blood pressure. [5]

Protocol (from reference)

Animal Study:[4]
  • Animal Models

    Sprague-Dawley rats

  • Dosages

    20 mg/kg

  • Administration

    Intramuscular (IM) injections

Selleck's Homatropine Methylbromide has been cited by 1 publication

Accumulation of 8,9-unsaturated sterols drives oligodendrocyte formation and remyelination [Hubler Z, et al. Nature, 2018, 560(7718):372-376] PubMed: 30046109

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.