Chemical substance record

Asulam

3337-71-1C₈H₁₀N₂O₄S230.245 g/mol

Organic/Inorganic Small MoleculeChEBI source record

A carbamate ester that is methyl carbamate substituted by a (4-aminophenyl)sulfonyl group at the nitrogen atom. A dihydropteroate synthase inhibitor, it is used (normally as the corresponding sodium salt, asulam-sodium) as a herbicide, mainly for killing bracken. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values

CAS number	3337-71-1	ChEBI ↗
Molecular formula	C₈H₁₀N₂O₄S	ChEBI ↗
Molar mass	230.245 g/mol	ChEBI ↗
Monoisotopic mass	230.03613 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:81696	ChEBI ↗

Names & structural identifiers

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Source preferred name

asulam

IUPAC name

methyl [(4-aminophenyl)sulfonyl]carbamate

InChIKey

VGPYEHKOIGNJKV-UHFFFAOYSA-N

SMILES

COC(=O)NS(=O)(=O)c1ccc(N)cc1

InChI

InChI=1S/C8H10N2O4S/c1-14-8(11)10-15(12,13)7-4-2-6(9)3-5-7/h2-5H,9H2,1H3,(H,10,11)

Names & synonyms

methyl [(4-aminophenyl)sulfonyl]carbamate

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

Classification & relationships

ChEBI ontology

carbamate esterChEBI parent class · 23003 ↗sulfonamideChEBI parent class · 35358 ↗substituted anilineChEBI parent class · 48975 ↗primary amino compoundChEBI parent class · 50994 ↗

ester organosulfur compound organic molecular entity

Roles recorded in ChEBI

herbicideagrochemicalxenobioticEC 2.5.1.15 (dihydropteroate synthase) inhibitorenvironmental contaminant

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

Amount

Input unit

Equivalent amount

0.0043432 mol

Uses 230.245 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 · 8 atoms

41.73%

O

Oxygen · 4 atoms

27.79%

S

Sulfur · 1 atom

13.93%

N

Nitrogen · 2 atoms

12.17%

H

Hydrogen · 10 atoms

4.38%

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

[The toxicity of herbicide Asulam]. ↗Hua xi yi ke da xue xue bao = Journal of West China University of Medical Sciences = Huaxi yike daxue xuebao · 1992 Jun · PMID 1452156

Determination of carbamate herbicide asulam in peaches following fluorescamine fluorigenic labelling. ↗Talanta · 1992 Sep · PMID 18965512

BE622214 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.

CN101492401 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.

CN101704771 · 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

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:81696

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

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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