FUN as a free ligand exists in 4 entries. Examples include: 3RF4 6DE9 2XN5

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Chemical Component Summary

Identifiers4-chloro-2-(furan-2-ylmethylamino)-5-sulfamoyl-benzoic acid
FormulaC12 H11 Cl N2 O5 S
Molecular Weight330.74
Isomeric SMILESNS(=O)(=O)c1cc(C(O)=O)c(NCc2ccco2)cc1Cl

Chemical Details

Formal Charge0
Atom Count32
Chiral Atom Count0
Chiral Atomsn/a
Bond Count33
Aromatic Bond Count11
Leaving Atomsn/a

Drug Info: DrugBank

DrugBank IDDB00695 Different stereochemistry
  • approved
  • vet_approved
DescriptionA benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for edema and chronic renal insufficiency. [PubChem]
  • 2-Furfurylamino-4-chloro-5-sulfamoylbenzoic acid
  • 4-Chloro-5-sulfamoyl-N-furfuryl-anthranilic acid
  • 4-Chloro-N-(2-furylmethyl)-5-sulfamoylanthranilic acid
  • 4-Chloro-N-furfuryl-5-sulfamoylanthranilic acid
  • Frusemide
Brand Names
  • Apo Furosemide Tab 20mg
  • Apo Furosemide Tab 40mg
  • Apo Furosemide Tab 80mg
  • Ava-furosemide
  • Bio-furosemid
Affected OrganismHumans and other mammals
IndicationFor the treatment of edema associated with congestive heart failure, cirrhosis of the liver, and renal disease, including the nephrotic syndrome. Also for the treatment of hypertension alone or in combination with other antihypertensive agents.
PharmacologyFurosemide, a sulfonamide-type loop diuretic structurally related to bumetanide, is used to manage hypertension and edema associated with congestive heart failure, cirrhosis, and renal disease, including the nephrotic syndrome.
Mechanism of actionFurosemide, a loop diuretic, inhibits water reabsorption in the nephron by blocking the sodium-potassium-chloride cotransporter (NKCC2) in the thick ascending limb of the loop of Henle. This is achieved through competitive inhibition at the chloride binding site on the cotransporter, thus preventing the transport of sodium from the lumen of the loop of Henle into the basolateral interstitium. Consequently, the lumen becomes more hypertonic while the interstitium becomes less hypertonic, which in turn diminishes the osmotic gradient for water reabsorption throughout the nephron. Because the thick ascending limb is responsible for 25% of sodium reabsorption in the nephron, furosemide is a very potent diuretic.
Route of administration
  • Intramuscular; Intravenous
  • Intravenous
  • Oral
  • Acids, Carbocyclic
  • Amides
  • Amines
  • Aminobenzoates
  • Aniline Compounds
  • C03EB01
  • C03CB01
  • C03CA01
CAS number54-31-9
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682