MedChemExpress -Model Clemastine fumarate -14976-57-9

FromMedChemExpress LLC (MCE)

Clemastine (HS-592) fumarate is a selective histamine H1 receptor antagonist. Clemastine fumarate is an antihistamine mainly used for relieving symptoms of allergic reactions primarily by competing with histamine to bind H1 receptors. Anti-inflammatory effects[1][2].

Clemastine fumarate

MCE China：Clemastine fumarate

Brand：MedChemExpress (MCE)

Cat. No.HY-B0298A

CAS：14976-57-9

Synonyms：HS-592 fumarate; Meclastine fumarate

Purity：99.97%

Storage：4°C, sealed storage, away from moisture *In solvent : -80°C, 1 year; -20°C, 6 months (sealed storage, away from moisture)

Shipping：Room temperature in continental US; may vary elsewhere.

Description：Clemastine (HS-592) fumarate is a selective histamine H1 receptor antagonist. Clemastine fumarate is an antihistamine mainly used for relieving symptoms of allergic reactions primarily by competing with histamine to bind H1 receptors. Anti-inflammatory effects.

In Vitro：Clemastine (fumarate) (HS-592 (fumarate)) inhibits histamine induced rise in [Ca2+]i in HL-60 cells with an IC50 of 3 nM as compared with that of chlorpheniramine or diphenhydramine with IC50 values of 20 nM and 100 nM, respectively[1]. Clemastine showed a first-pass reduction in the extent of absorption, with oral bioavailability calculated as 39.2 +/- 12.4%. Extravascular distribution of drug was suggested by the high volume of distribution (799 +/- 315 L) and low Cmax (0.577 +/- 0.252 ng/mL/mg) observed at 4.77 +/- 2.26 hours after administration, and by the biphasic decline in plasma concentration. The terminal elimination half-life (t1/2) of clemastine was 21.3 +/- 11.6 hours. Steady-state concentrations of clemastine were consistent with linear pharmacokinetic processes, and clearance was unaffected by age in the range studied, or by race[2].

IC50 & Target：H1 Receptor

References：

[1]. Seifert, R., et al., Histamine increases cytosolic Ca2+ in dibutyryl-cAMP-differentiated HL-60 cells via H1 receptors and is an incomplete secretagogue. Mol Pharmacol, 1992. 42(2): p. 227-34. [Content Brief]

[2]. Clemastine. In: LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; January 16, 2017. [Content Brief]

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