Oxolinic acid
A quinolinemonocarboxylic acid having the carboxy group at position 7 as well as oxo and ethyl groups at positions 4 and 1 respectively and a dioxolo ring fused at the 5- and 6-positions. A synthetic antibiotic, it is used in veterinary medicine for the treatment of bacterial infections in cattle, pigs and poultry. — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 14698-29-4 | ChEBI ↗ |
| Molecular formula | C13H11NO5 | ChEBI ↗ |
| Molar mass | 261.233 g/mol | ChEBI ↗ |
| Monoisotopic mass | 261.06372 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:138856 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 261.23 g/mol | PubChem ↗ |
| Exact mass | 261.06372245 Da | PubChem ↗ |
| Computed XLogP | -0.2 | PubChem ↗ |
| Topological polar surface area (Ų) | 76.1 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 6 | PubChem ↗ |
| Rotatable bonds | 2 | 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 identifieroxolinic acid5-ethyl-8-oxo-5,8-dihydro[1,3]dioxolo[4,5-g]quinoline-7-carboxylic acidKYGZCKSPAKDVKC-UHFFFAOYSA-NCCn1cc(C(=O)O)c(=O)c2cc3c(cc21)OCO3InChI=1S/C13H11NO5/c1-2-14-5-8(13(16)17)12(15)7-3-10-11(4-9(7)14)19-6-18-10/h3-5H,2,6H2,1H3,(H,16,17)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 governmentOxolinic acid · 24A6030
| Endpoint | Reported classification |
|---|---|
| Acute toxicity （Inhalation: Dusts and mists） | Category 4 |
| Specific target organ toxicity - Single exposure | Category 2 (central nervous system) |
| Specific target organ toxicity - Repeated exposure | Category 2 (nervous system) |
| Hazardous to the aquatic environment （Acute） | Category 2 |
| Hazardous to the aquatic environment （Long-term） | Category 2 |
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 261.233 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCONHCalculated 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.