Tritoqualine

Clinical data
AHFS/Drugs.com	International Drug Names
ATC code	R06AX21 (WHO)
Identifiers
IUPAC name 7-amino-4,5,6-triethoxy-3-(4-methoxy-6-methyl-7,8-dihydro-5H-[1,3]dioxolo[4,5-g]isoquinolin-5-yl)-3H-isobenzofuran-1-one
CAS Number	14504-73-5
PubChem CID	72145
ChemSpider	65119
UNII	F4MW5166YH
Chemical and physical data
Formula	C26H32N2O8
Molar mass	500.548 g·mol−1
3D model (JSmol)	Interactive image
SMILES CCOC1=C(C(=C(C2=C1C(OC2=O)C3C4=C(C5=C(C=C4CCN3C)OCO5)OC)N)OCC)OCC

Tritoqualine, also known as hypostamine, is an inhibitor of the enzyme histidine decarboxylase and therefore an atypical antihistamine, used for the treatment of urticaria and allergic rhinitis^[1] with no known adverse effects.^{[citation needed]}