Formulation: A solid
Formal Name: 4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-1-piperidine-3,3,5,5-d4-carboxylic acid, ethyl ester
Purity: ≥99% deuterated forms (d1-d4)
Formula Markup: C22H19ClD4N2O2
Formula Weight: 386,9
Shelf life (days): 1460
CAS Number: 2748435-73-4
Notes: Loratadine-d4 is intended for use as an internal standard for the quantification of loratadine (Item No. 15625) by GC- or LC-MS. Loratadine is a non-sedating antihistamine that acts as a selective inverse agonist of peripheral histamine H1 receptors (Ki = 35 nM).{25629,22788,25628} It has been shown to inhibit the release of leukotriene C4 (IC50 = 8 µM) and histamine (IC50 = 11 µM) from rodent mast cells and to inhibit allergic bronchospasm in guinea pigs with an ED50 value of 0.40 mg/kg.{25627} Formulations containing loratadine have been used in the treatment of allergic rhinitis and chronic idiopathic urticaria.
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