Quinethazone
{{Short description|Chemical compound}}
{{Drugbox
| verifiedrevid = 464378622
| IUPAC_name = 7-chloro-2-ethyl-4-oxo-1,2,3,4-tetrahydroquinazoline-
6-sulfonamide
| image = Quinethazone.svg
| tradename =
| Drugs.com = {{drugs.com|CONS|quinethazone}}
| pregnancy_AU =
| pregnancy_US =
| pregnancy_category =
| legal_AU =
| legal_UK =
| legal_US =
| legal_status = Rx-only
| routes_of_administration = Oral
| bioavailability =
| protein_bound =
| metabolism =
| elimination_half-life =
| excretion =
| IUPHAR_ligand = 7289
| CAS_number_Ref = {{cascite|correct|??}}
| CAS_number = 73-49-4
| ATC_prefix = C03
| ATC_suffix = BA02
| PubChem = 6307
| DrugBank_Ref = {{drugbankcite|correct|drugbank}}
| DrugBank = DB01325
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 6068
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 455E0S048W
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = D00461
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 1532
| C=10 | H=12 | Cl=1 | N=3 | O=3 | S=1
| smiles = O=S(=O)(c2c(Cl)cc1c(C(=O)NC(N1)CC)c2)N
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/C10H12ClN3O3S/c1-2-9-13-7-4-6(11)8(18(12,16)17)3-5(7)10(15)14-9/h3-4,9,13H,2H2,1H3,(H,14,15)(H2,12,16,17)
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = AGMMTXLNIQSRCG-UHFFFAOYSA-N
}}
Quinethazone (INN, brand name Hydromox) is a thiazide-like diuretic used to treat hypertension.{{cite journal | vauthors = Sandler G | title = Quinethazone, a new oral diuretic | journal = British Medical Journal | volume = 2 | issue = 5404 | pages = 288–92 | date = August 1964 | pmid = 14160213 | pmc = 1815620 | doi = 10.1136/bmj.2.5404.288 | url = }} Common side effects include dizziness, dry mouth, nausea, and low potassium levels.