| Bioactivity | Homatropine is an orally active muscarinic acetylcholine receptor antagonist and can be used as an anticholinergic agent[1]. |
| Invitro | Homatropine (20 μM) alone produces a dose ratio of 259 in atrium from guinea-pigs, and produces a dose ratio of only 95.0 when combined with Hexamethonium Bromide (HY-B0569) in atrium from guinea-pigs[1].Homatropine has 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]. |
| In Vivo | Homatropine methylbromide (9 mm x 5 mm conical suppository) causes prompt blockade of the effects of vagal stimulation on pulse rate and of intravenous acetylcholine on blood pressure in rats[3]. Animal Model: |
| Name | Homatropine |
| CAS | 87-00-3 |
| Formula | C16H21NO3 |
| Molar Mass | 275.34 |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | Please store the product under the recommended conditions in the Certificate of Analysis. |
| Reference | [1]. Leung, E. and F. Mitchelson, Modification by hexamethonium of the muscarinic receptors blocking activity of pancuronium and homatropine in isolated tissues of the guinea-pig. Eur J Pharmacol, 1982. 80(1): p. 11-7. [2]. Gilani, S.A. and L.B. Cobbin, Interaction of himbacine with carbachol at muscarinic receptors of heart and smooth muscle. Arch Int Pharmacodyn Ther, 1987. 290(1): p. 46-53. [3]. Cramer, M.B., L.A. Cates, and D.E. Clarke, Rectal absorption of homatropine [14C]methylbromide in the rat. J Pharm Pharmacol, 1978. 30(5): p. 284-6. |