Please Wait
Applying Filters...
Menu
Xls
2D Structure
Also known as: 80-74-0, Acetyl sulfisoxazole, Lipo gantrisin, Acetylsulfafurazole, Acetylsulfisoxazole, Sulfisoxazole acetal
Molecular Formula
C13H15N3O4S
Molecular Weight
309.34  g/mol
InChI Key
JFNWFXVFBDDWCX-UHFFFAOYSA-N
FDA UNII
WBT5QH3KED

Sulfisoxazole Acetyl is an ester of sulfisoxazole, a broad-spectrum sulfanilamide and a synthetic analog of para-aminobenzoic acid (PABA) with antibacterial property. Sulfisoxazole acetyl competes with PABA for the bacterial enzyme dihydropteroate synthase, thereby preventing the incorporation of PABA into dihydrofolic acid, the immediate precursor of folic acid. This leads to an inhibition of bacterial folic acid synthesis and de novo synthesis of purines and pyrimidines, ultimately resulting in cell growth arrest and cell death.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
N-(4-aminophenyl)sulfonyl-N-(3,4-dimethyl-1,2-oxazol-5-yl)acetamide
2.1.2 InChI
InChI=1S/C13H15N3O4S/c1-8-9(2)15-20-13(8)16(10(3)17)21(18,19)12-6-4-11(14)5-7-12/h4-7H,14H2,1-3H3
2.1.3 InChI Key
JFNWFXVFBDDWCX-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CC1=C(ON=C1C)N(C(=O)C)S(=O)(=O)C2=CC=C(C=C2)N
2.2 Other Identifiers
2.2.1 UNII
WBT5QH3KED
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Acetyl Sulfisoxazole

2.3.2 Depositor-Supplied Synonyms

1. 80-74-0

2. Acetyl Sulfisoxazole

3. Lipo Gantrisin

4. Acetylsulfafurazole

5. Acetylsulfisoxazole

6. Sulfisoxazole Acetal

7. N-((4-aminophenyl)sulfonyl)-n-(3,4-dimethylisoxazol-5-yl)acetamide

8. Acetylgantrisin

9. N-(4-aminophenyl)sulfonyl-n-(3,4-dimethyl-1,2-oxazol-5-yl)acetamide

10. Acetyl Sulfafurazole

11. Sulfafurazole Acetyl

12. Sulfisoxizole Acetyl

13. N-(3,4-dimethyl-5-isoxazolyl)-n-sulfanilylacetamide

14. Wbt5qh3ked

15. Sulfisoxazole Acetyl [usp]

16. Nsc-759138

17. Acetamide, N-((4-aminophenyl)sulfonyl)-n-(3,4-dimethyl-5-isoxazolyl)-

18. Acetylsulfisoxazole (jan)

19. Sulfisoxazole Acetyl (usp)

20. Acetylsulfisoxazole [jan]

21. N-3,4-dimethylisoxazol-5-yl-n-sulfanilylacetamide

22. Acetamide, N-[(4-aminophenyl)sulfonyl]-n-(3,4-dimethyl-5-isoxazolyl)-

23. Sulfisoxazoleacetyl(200mg)

24. Unii-wbt5qh3ked

25. Einecs 201-305-3

26. N-3,4-dimethylisoxazol-5-yl-n-sulphanilylacetamide

27. N-[(4-aminophenyl)sulfonyl]-n-(3,4-dimethylisoxazol-5-yl)acetamide

28. Sulfisoxazole-acetyl

29. Lipo Gantrisin (tn)

30. Dsstox_cid_3620

31. Dsstox_rid_97551

32. Dsstox_gsid_23620

33. Schembl41727

34. Zinc2114

35. Chembl1200910

36. Dtxsid4023620

37. Acetyl Sulfisoxazole [mi]

38. Chebi:135975

39. Amy37432

40. N-(4-aminophenyl)sulfonyl-n-(3,4-dimethylisoxazol-5-yl)acetamide

41. Sulfisoxazole Acetyl [vandf]

42. Tox21_113660

43. Acetyl Sulfafurazole [mart.]

44. Mfcd00072139

45. Sulfafurazole Acetyl [who-dd]

46. Sulfisoxazole Acetyl [usp-rs]

47. Db14033

48. Nsc 759138

49. Cas-80-74-0

50. Ncgc00249884-01

51. Sulfisoxazole Acetyl [orange Book]

52. Hy-107923

53. Sulfisoxazole Acetyl [usp Monograph]

54. B4954

55. Cs-0030871

56. Eryzole Component Sulfisoxazole Acetyl

57. D05956

58. Pediazole Component Sulfisoxazole Acetyl

59. Sulfisoxazole Acetyl Component Of Eryzole

60. A915833

61. Ilosone Sulfa Component Sulfisoxazole Acetyl

62. Sulfisoxazole Acetyl Component Of Pediazole

63. Q27292550

64. Sulfisoxazole Acetyl Component Of Ilosone Sulfa

65. Acetamide, N-(3,4-dimethyl-5-isoxazolyl)-n-sulfanilyl-

66. N-[(4-aminophenyl)sulfonyl]-n-(3,4-dimethyl-5-isoxazolyl)acetamide

67. N-acetyl-4-amino-n-(3,4-dimethyl-5-isoxazolyl)benzenesulfonamide #

68. N-[(4-aminophenyl)sulfonyl]-n-(3,4-dimethyl-5- Isoxazolyl)acetamide

2.4 Create Date
2005-03-27
3 Chemical and Physical Properties
Molecular Weight 309.34 g/mol
Molecular Formula C13H15N3O4S
XLogP31.3
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count6
Rotatable Bond Count3
Exact Mass309.07832714 g/mol
Monoisotopic Mass309.07832714 g/mol
Topological Polar Surface Area115 Ų
Heavy Atom Count21
Formal Charge0
Complexity482
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Indication

Acute, recurrent or chronic urinary tract infections (primarily pyelonephritis, pyelitis and cystitis) due to susceptible organisms (usually Escherichia coli, Klebsiella-Enterobacter, staphylococcus, Proteus mirabilis and, less frequently, Proteus vulgaris) in the absence of obstructive uropathy or foreign bodies Meningococcal meningitis where the organism has been demonstrated to be susceptible. Haemophilus influenzae meningitis as adjunctive therapy with parenteral streptomycin Meningococcal meningitis prophylaxis. Acute otitis media due to Haemophilus influenzae when used concomitantly with adequate doses of penicillin or erythromycin (see appropriate labeling for prescribing information). Trachoma, inclusion conjunctivitis, nocardiosis, chancroid, toxoplasmosis as adjunctive therapy with pyrimethamine. Malaria due to chloroquine-resistant strains of Plasmodium falciparum, when used as adjunctive therapy. Currently, the increasing frequency of resistant organisms is a limitation of the usefulness of antibacterial agents including the sulfonamides, especially in the treatment of chronic and recurrent urinary tract infections.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Sulfisoxazole is a sulfonamide antibiotic. The sulfonamides are synthetic bacteriostatic antibiotics with action against most gram-positive and many gram-negative organisms. Many strains of an individual species may be resistant to this drugf. Sulfonamides inhibit the multiplication of bacteria by acting as competitive inhibitors of p-aminobenzoic acid in the folic acid metabolism cycle. Bacterial sensitivity is the same for the various sulfonamides, and resistance to one sulfonamide indicates resistance to all. Although these drugs are no longer used to treat meningitis, CSF levels are high in meningeal infections. Their antibacterial action is inhibited by pus.


5.2 Absorption, Distribution and Excretion

Absorption

Readily absorbed from the gastrointestinal tract. In a pharmacokinetic study, the adjustments for variable renal clearances between oral and intravenous administration and using the unbound plasma concentrations, the bioavailability for an oral dose of sulfisoxazole was found to be 0.95 +/- 0.04.


Route of Elimination

The mean urinary excretion recovery following oral administration of sulfisoxazole is 97% within 48 hours, of which 52% is the parent drug, and the remaining as the N4-acetylated metabolite. It is excreted in human milk. Sulfisoxazole and its acetylated metabolites are excreted primarily by the kidneys through glomerular filtration.


Volume of Distribution

The sulfonamides are widely distributed throughout all body tissues. It readily crosses the placental barrier and enters into fetal circulation and also crosses the blood-brain barrier. In healthy subjects, cerebrospinal fluid concentrations of sulfisoxazole vary; in patients with meningitis, however, concentrations of free drug in cerebrospinal fluid as high as 94 mcg/mL have been reported. In a pharmacokinetic study, the apparent volume of distribution for total drug was 10.9 +/- 2.0 liters and 136 +/- 36 liters for the unbound drug, indicating that sulfisoxazole is primarily distributed extracellularly.


Clearance

The clearance of sulfisoxazole is 18.7 +/- 3.9 ml/min for total drug and 232 +/- 64 ml/min for the unbound drug.


5.3 Metabolism/Metabolites

Sulfisoxazole acetyl is a prodrug of _sulfisoxazole_. The acetyl group is added to make the drug poorly water-soluble and is hydrolyzed in vivo to the active drug,. N1-acetyl sulfisoxazole is metabolized to sulfisoxazole by digestive enzymes in the gastrointestinal tract and is absorbed as sulfisoxazole. This enzymatic splitting is thought to be responsible for slower absorption and lower peak blood concentrations are achieved after administration of an equal oral dose of sulfisoxazole. With sustained administration of acetyl sulfisoxazole, blood concentrations approximate those of sulfisoxazole. Following a single 4 gram dose of acetyl sulfisoxazole to healthy volunteers, maximum plasma concentrations of sulfisoxazole ranged from 122 to 282 mcg/mL (mean, 181 mcg/mL) for the pediatric suspension and occurred between 2 and 6 hours postadministration of sulfisoxazole, in a pharmacokinetic study.


5.4 Biological Half-Life

The serum half-life is 10 -12 hours.


5.5 Mechanism of Action

Sulfisoxazole is a competitive inhibitor of the enzyme dihydropteroate synthetase. It inhibits bacterial synthesis of dihydrofolic acid by preventing the condensation of the pteridine with para-aminobenzoic acid (PABA), a substrate of the enzyme dihydropteroate synthetase. The inhibited reaction is necessary in these organisms for the synthesis of folic acid.