1. GPCR/G Protein
    Neuronal Signaling
  2. mAChR
  3. Homatropine Bromide

Homatropine Bromide (Synonyms: Homatropine hydrobromide)

Cat. No.: HY-B0547A Purity: >99.0%
Handling Instructions

Homatropine Bromide is muscarinic AChR antagonist that is an anticholinergic medication.

For research use only. We do not sell to patients.

Homatropine Bromide Chemical Structure

Homatropine Bromide Chemical Structure

CAS No. : 51-56-9

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Description

Homatropine Bromide is muscarinic AChR antagonist that is an anticholinergic medication. Target: mAChR Homatropine is an anticholinergic medication that is an antagonist at muscarinic acetylcholine receptors and thus the parasympathetic nervous system. 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 [1]. 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 [2]. 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 [3].

Clinical Trial
Molecular Weight

356.25

Formula

C₁₆H₂₂BrNO₃

CAS No.

51-56-9

SMILES

O=C(C(C1=CC=CC=C1)O)O[[email protected]]2C[[email protected]@H](CC3)N(C)[[email protected]@H]3C2.Br

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 21.5 mg/mL (60.35 mM; Need ultrasonic and warming)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.8070 mL 14.0351 mL 28.0702 mL
5 mM 0.5614 mL 2.8070 mL 5.6140 mL
10 mM 0.2807 mL 1.4035 mL 2.8070 mL
*Please refer to the solubility information to select the appropriate solvent.
References
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Keywords:

HomatropinemAChRMuscarinic acetylcholine receptorInhibitorinhibitorinhibit

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