Sulfadimethoxine

Sulfadimethoxine (or sulphadimethoxine, trade names Di-Methox or Albon) is a long-lasting sulfonamide antimicrobial medication used in veterinary medicine. It is used to treat many infections, including respiratory, urinary tract, enteric, and soft tissue infections and can be given as a standalone or combined with ormetoprim to broaden the target range. Like all sulfamides, sulfadimethoxine inhibits bacterial synthesis of folic acid by acting as a competitive inhibitor against PABA. It is the most common drug prescribed to dogs who have coccidiosis.

Sulfadimethoxine
Clinical data
Trade namesAlbon, Di-Methox
AHFS/Drugs.comFDA Professional Drug Information
Routes of
administration
By mouth; can be IV in cattle
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • US: ℞-only (by veterinarian)
Pharmacokinetic data
Bioavailability55–60%
Elimination half-life13.1 hours in dogs
Identifiers
  • 4-Amino-N-(2,6-dimethoxypyrimidin-4-yl)benzenesulfonamide
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.004.113
Chemical and physical data
FormulaC12H14N4O4S
Molar mass310.33 g·mol−1
3D model (JSmol)
  • COc1cc(nc(n1)OC)NS(=O)(=O)c2ccc(cc2)N
  • InChI=1S/C12H14N4O4S/c1-19-11-7-10(14-12(15-11)20-2)16-21(17,18)9-5-3-8(13)4-6-9/h3-7H,13H2,1-2H3,(H,14,15,16) Y
  • Key:ZZORFUFYDOWNEF-UHFFFAOYSA-N Y
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