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Chemical substance record

Sulfapyridine

144-83-2C11H11N3O2S249.295 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A sulfonamide consisting of pyridine with a 4-aminobenzenesulfonamido group at the 2-position. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values
CAS number144-83-2ChEBI ↗
Molecular formulaC11H11N3O2SChEBI ↗
Molar mass249.295 g/molChEBI ↗
Monoisotopic mass249.0572 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:132842ChEBI ↗

Cross-source molecular data

PubChem
Molar mass249.29 g/molPubChem ↗
Exact mass249.05719778 DaPubChem ↗
Computed XLogP0PubChem ↗
Topological polar surface area (Ų)93.5PubChem ↗
H-bond donors2PubChem ↗
H-bond acceptors5PubChem ↗
Rotatable bonds3PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
sulfapyridine
4-amino-N-(pyridin-2-yl)benzenesulfonamide
GECHUMIMRBOMGK-UHFFFAOYSA-N
Nc1ccc(S(=O)(=O)Nc2ccccn2)cc1
InChI=1S/C11H11N3O2S/c12-9-4-6-10(7-5-9)17(15,16)14-11-3-1-2-8-13-11/h1-8H,12H2,(H,13,14)

Names & synonyms

4-amino-N-(pyridin-2-yl)benzenesulfonamidesulfapiridinasulfapyridinum

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology
pyridinesChEBI parent class · 26421 ↗sulfonamideChEBI parent class · 35358 ↗substituted anilineChEBI parent class · 48975 ↗sulfonamide antibioticChEBI parent class · 87228 ↗
organosulfur compoundorganic heterocyclic compoundorganic molecular entity

Roles recorded in ChEBI

antibacterial agentantiinfective agentxenobioticdermatologic drugenvironmental contaminantdrug allergen

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00401131 mol

Uses 249.295 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
C
Carbon · 11 atoms
53.00%
N
Nitrogen · 3 atoms
16.86%
S
Sulfur · 1 atom
12.86%
O
Oxygen · 2 atoms
12.84%
H
Hydrogen · 11 atoms
4.45%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations
Degeneracy and additional alloreactivity of drug-specific human alpha beta(+) T cell clones. ↗International immunology · 2001 Jul · PMID 11431418
Profiling Protein Arginine Deiminase 4 (PAD4): a novel screen to identify PAD4 inhibitors. ↗Bioorganic & medicinal chemistry · 2008 Jan 15 · PMID 17964793
GB512145 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
US2275354 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:132842

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 5336 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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