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Chemical substance record

Sulfamerazine

127-79-7C11H12N4O2S264.31 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A sulfonamide consisting of pyrimidine with a methyl substituent at the 4-position and 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 number127-79-7ChEBI ↗
Molecular formulaC11H12N4O2SChEBI ↗
Molar mass264.31 g/molChEBI ↗
Monoisotopic mass264.0681 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:102130ChEBI ↗

Cross-source molecular data

PubChem
Molar mass264.31 g/molPubChem ↗
Exact mass264.06809681 DaPubChem ↗
Computed XLogP0.1PubChem ↗
Topological polar surface area (Ų)106PubChem ↗
H-bond donors2PubChem ↗
H-bond acceptors6PubChem ↗
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
sulfamerazine
4-amino-N-(4-methylpyrimidin-2-yl)benzenesulfonamide
QPPBRPIAZZHUNT-UHFFFAOYSA-N
Cc1ccnc(NS(=O)(=O)c2ccc(N)cc2)n1
InChI=1S/C11H12N4O2S/c1-8-6-7-13-11(14-8)15-18(16,17)10-4-2-9(12)3-5-10/h2-7H,12H2,1H3,(H,13,14,15)

Names & synonyms

4-amino-N-(4-methylpyrimidin-2-yl)benzenesulfonamidesulfamerazinasulfamerazinum

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

Classification & relationships

ChEBI ontology
sulfonamideChEBI parent class · 35358 ↗pyrimidinesChEBI parent class · 39447 ↗sulfonamide antibioticChEBI parent class · 87228 ↗
organosulfur compoundorganic heterocyclic compoundorganic molecular entity

Roles recorded in ChEBI

antibacterial agentantiinfective agentdrug 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
0.00378344 mol

Uses 264.31 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
49.99%
N
Nitrogen · 4 atoms
21.20%
S
Sulfur · 1 atom
12.13%
O
Oxygen · 2 atoms
12.11%
H
Hydrogen · 12 atoms
4.58%

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
Therapy with a new sulfonamide triple mixture; sulfadiazine, sulfamerazine, elkosin. ↗Postgraduate medicine · 1953 Mar · PMID 13037579
US2407966 · 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:102130

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

NCBI PubChem · CID 5325 · 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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