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CAS 723-46-6

CAS 723-46-6 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 723-46-6
CAS 723-46-6PubChem CID 5329

Sulfamethoxazole

Sulfamethoxazole is an isoxazole (1,2-oxazole) compound having a methyl substituent at the 5-position and a 4-aminobenzenesulfonamido group at the 3-position. It has a role as an antimicrobial agent, an antibacterial agent, an antiinfective agent, a xenobiotic, a P450 inhibitor, an EC 2.5.1.15 (dihydropteroate synthase) inhibitor, an epitope, an EC 1.1.1.153 [sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming)] inhibitor, an environmental contaminant and a drug allergen. It is a sulfonamide, a substituted aniline, a member of isoxazoles and a sulfonamide antibiotic. It is functionally related to a sulfanilamide. — ChEBI

IUPAC name
4-amino-N-(5-methyl-1,2-oxazol-3-yl)benzenesulfonamide
Molecular formula
C10H11N3O3S
Molecular weight
253.28 g/mol
Exact mass
253.05211239 Da
XLogP3
0.9
Topological polar surface area
107.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

GantanolSulphamethoxazoleSulfisomezoleSulfamethoxazol4-Amino-N-(5-methyl-3-isoxazolyl)benzenesulfonamideRadonilSinomin4-amino-N-(5-methylisoxazol-3-yl)benzenesulfonamide
16 more reported names
SulfamethylisoxazoleSulfamethalazoleAzo-gantanolUrobakSulfamethoxizoleGantanol-DSRo 4-2130SulfametoxazolGamazole3-Sulfanilamido-5-methylisoxazoleSulfamethoxazolumBenzenesulfonamide, 4-amino-N-(5-methyl-3-isoxazolyl)-5-Methyl-3-sulfanilamidoisoxazoleMS 533-(p-Aminophenylsulfonamido)-5-methylisoxazole3-(para-Aminophenylsulphonamido)-5-methylisoxazole
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External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 723-46-6

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How CAS 723-46-6 is used on this site

CAS 723-46-6 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 723-46-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.