Synonyms: 8-Chloro-11-{1-[(5-methyl-3-pyridinyl)methyl]-4-piperidinylidene}-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine (E)-2-butenedioate (1:1); 5H-Benzo[5,6]cyclohepta[1,2-b]pyridine, 8-chloro-6,11-dihydro-11-[1-[(5-methyl-3-pyridinyl)methyl]-4-piperidinylidene]-, (E)-2-butenedioate (1:1); UR 12592 fumarate; UR-12592 fumarate; UR12592 fumarate
Molecular Formula: C26H26ClN3 · C4H4O4
Molecular Weight: 532.03
Linear Structural Formula: C26H26ClN3 · C4H4O4
MDL Number: MFCD00926499
Purity: >=98% (HPLC)
Storage: 2-8C
Biochem Physiol Actions: Rupatadine (UR-12592) is an orally active, dual histamine H1 and platelet-activating factor (PAF) receptor antagonist (Ki(app) = 100/550 nM against pyrilamine/WEB2086 binding to guinea pig cerebellum/rabbit platelet membranes) that inhibits histamine-induced guinea pig ileum contraction (pA2 = 9.29) and PAF-induced platelet aggregation (IC50 = 0.68 muM/human PRP). Rupatadine blocks histamine-/PAF-induced hypotension (ID50 = 1.4/0.44 mg/kg i.v. rats) and bronchoconstriction (ID50 = 113/9.6 mug/kg i.v. guinea pigs), as well as prevents mortality caused by PAF (ID50 = 0.31 mg/kg i.v. or 3.0 mg/kg p.o. mice) and endotoxin (mice/rats ID50 = 1.6/0.66 mg/kg i.v.) in vivo.