5-Acetoxy-2-methylbenzoic acid CAS 24042-23-7
| CAS No. | 24042-23-7 |
| Molecular Formula | C10H10O4 |
| Molecular Weight | 194.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Acetoxy-2-methylbenzoic acid (CAS 24042-23-7), molecular formula C10H10O4 and molecular weight 194.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H10O4, 5-Acetoxy-2-methylbenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 194.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 5-Acetoxy-2-methylbenzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H10O4 |
| Molecular Weight | 194.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related Acetoxy Standards
- 2-Acetoxy-4-methylbenzoic acid (CAS 14504-07-5)
- 3-Acetoxy-2-methylbenzoic acid (CAS 168899-58-9)
- 3-Acetoxy-4-methylbenzoic acid (CAS 17477-46-2)
- 2-Acetoxy-2-phenylacetic acid (CAS 5438-68-6)
- 2-Acetoxy-6-methylbenzoic acid (CAS 31490-86-5)
- 5'-Acetoxy-2'-Hydroxyacetophenone (CAS 21222-04-8)
- 2-Acetoxy-5-chloropentanoic acid (CAS 153714-12-6)
- 2-Acetoxy-5-aminobenzoic acid (CAS 99450-52-9)
Recommended Standards
- 5-Acetyl-2-methoxybenzoic acid (CAS 68535-61-5)
- 5,8-Difluoro-2-methylquinolin-4-amine (CAS 288151-30-4)
- 5-Methoxy-2,3-dihydro-1-benzofuran-3-carboxylic acid (CAS 944900-04-3)
- 5,7-Dimethoxyisobenzofuran-1(3H)-one (CAS 3465-69-8)
- (6-Methyl-6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-3-yl)methanamine (CAS 1706447-85-9)
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- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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