Deslorata<wbr/>dine-d<sub>4</sub>

Desloratadine-d4

CAT N°: 26776
Price:

From 106.00 90.10

Desloratadine-d4 is intended for use as an internal standard for the quantification of desloratadine (Item No. 16931) by GC- or LC-MS. Desloratadine is a histamine H1 receptor antagonist (Ki = 0.97 nM) and an active metabolite of loratadine (Item No. 15625).{27482,64192} It is formed from loratadine primarily by the cytochrome P450 (CYP) isoforms CYP3A4, CYP2D6, and CYP2C19.{64193} It also inhibits calcium flow in neurons and glia in vitro (IC50s = 9.177 and 0.3185 µM, respectively), an effect that can be blocked by knockdown of the 5-HT receptor subtype 5-HT2A.{64190} Desloratadine (10 mg/kg) reduces ovalbumin-induced sneezing, nose rubbing, eye watering, and congestion in ovalbumin-sensitized guinea pigs.{64191} It also increases the clearance of amyloid-? by microglia and reverses learning and memory deficits in the Morris water maze in the transgenic APP/PS1 mouse model of Alzheimer’s disease when administered at a dose of 20 mg/kg per day.{64190} Formulations containing desloratadine have been used in the treatment of seasonal and perennial allergic rhinitis and chronic idiopathic urticaria.

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