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Systematic (IUPAC) name
Clinical data
Trade names Eadazine, Kelfizina, Kelfizine W, Longum
AHFS/ International Drug Names
Legal status
Routes Oral[1]
Pharmacokinetic data
Protein binding 60 to 80%[1]
Half-life 60 to 65 hours[1]
Excretion Urinary[1]
CAS number 152-47-6 YesY
ATC code J01ED02 QJ01EQ19
PubChem CID 9047
DrugBank DB00664
ChemSpider 8695 YesY
KEGG D01216 YesY
Synonyms Sulfametopyrazine
Chemical data
Formula C11H12N4O3S 
Molecular mass 280.304 g/mol
 YesY (what is this?)  (verify)

Sulfalene (INN, USAN) or sulfametopyrazine (BAN) is a long-acting sulfonamide antibacterial used for the treatment of chronic bronchitis, urinary tract infections and malaria.[2][3] There are only two countries in which it is currently still marketed: Thailand and Ireland.[3]


Sulfalene synthesis: GB 928151  U.S. Patent 3,098,069 [4]

See also[edit]


  1. ^ a b c d "Sulfalene". MIMS Drug Information System. Retrieved 26 August 2011. 
  2. ^ DrugBank DB00664
  3. ^ a b Brayfield, A, ed. (9 May 2013). "Sulfametopyrazine". Martindale: The Complete Drug Reference. Pharmaceutical Press. Retrieved 28 March 2014. 
  4. ^ Camerino, B.; Palamidessi, G., Gazz. Chim. Ital., (1960) 90, 1815.