Benomyl
A member of the class of benzimidazoles that is the methyl ester of [1-(butylcarbamoyl)-1H-benzimidazol-2-yl]carbamic acid. A foliar fungicide used to control a wide range of Ascomycetes and Fungi Imperfecti in a wide range of crops. — ChEBI
Safety documents & references
2 indexed referencesFind a product-specific SDS
Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.
Identity & molecular properties
Source-linked values| CAS number | 17804-35-2 | ChEBI ↗ |
| Molecular formula | C14H18N4O3 | ChEBI ↗ |
| Molar mass | 290.323 g/mol | ChEBI ↗ |
| Monoisotopic mass | 290.13789 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:3015 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 290.32 g/mol | PubChem ↗ |
| Exact mass | 290.13789045 Da | PubChem ↗ |
| Computed XLogP | 2.1 | PubChem ↗ |
| Topological polar surface area (Ų) | 85.3 | PubChem ↗ |
| H-bond donors | 2 | PubChem ↗ |
| H-bond acceptors | 4 | PubChem ↗ |
| Rotatable bonds | 5 | PubChem ↗ |
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 identifierbenomylmethyl [1-(butylcarbamoyl)-1H-benzimidazol-2-yl]carbamateRIOXQFHNBCKOKP-UHFFFAOYSA-NCCCCNC(=O)n1c(NC(=O)OC)nc2ccccc21InChI=1S/C14H18N4O3/c1-3-4-9-15-13(19)18-11-8-6-5-7-10(11)16-12(18)17-14(20)21-2/h5-8H,3-4,9H2,1-2H3,(H,15,19)(H,16,17,20)Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Safety classification · Japan
NITE / Japanese governmentMethyl N-[1-(N-n-butylcarbamoyl)-1H-2-benzimidazolyl]carbamate; Benomyl · R02-B-039-MHLW
| Endpoint | Reported classification |
|---|---|
| Skin sensitization | Category 1A |
| Germ cell mutagenicity | Category 1B |
| Carcinogenicity | Category 2 |
| Reproductive toxicity | Category 1B |
| Specific target organ toxicity - Single exposure | Category 1 (reproductive organs (male)) |
| Specific target organ toxicity - Repeated exposure | Category 2 (nasal cavity, liver, reproductive organs (male)) |
Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.
Read the original NITE classificationMass ↔ amount of substance
Calculated from sourced massUses 290.323 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCNOHCalculated 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 associationsSources & record history
Checked 27 Sep 2026Release 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.