Pirquinozol

Routes of
administrationOral

ATC code

• none

Legal status

• In general: uncontrolled

CAS Number

• 65950-99-4

Pirquinozol

Clinical data
Routes of administration	Oral
ATC code	none
Legal status
Legal status	In general: uncontrolled
Identifiers
IUPAC name 2-(hydroxymethyl)pyrazolo[1,5-c]quinazolin-5(6H)-one
CAS Number	65950-99-4
PubChem CID	47783
ChemSpider	11317704
UNII	D16HG4V2UC
KEGG	D05516
CompTox Dashboard (EPA)	DTXSID00984432
Chemical and physical data
Formula	C11H9N3O2
Molar mass	215.212 g·mol−1
3D model (JSmol)	Interactive image
SMILES OCc1cc2c3ccccc3NC(=O)n2n1

Pirquinozol (SQ-13,847) is a drug which was investigated as an antiallergen and antiasthmatic agent in the early 1980s but was never marketed.^[1][2][3] Notably, pirquinozol is not an antihistamine, though it does block the release of histamine evoked by allergens, and it does not bind to β-adrenergic receptors either.^[1]