4-Methyl-4-(p-tolyl)pentanoic acid CAS 40663-79-4
| CAS No. | 40663-79-4 |
| Molecular Formula | C13H18O2 |
| Molecular Weight | 206.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 206.28 g/mol gives 4-Methyl-4-(p-tolyl)pentanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Methyl-4-(p-tolyl)pentanoic acid (CAS 40663-79-4) is a high-purity analytical reference standard with the molecular formula C13H18O2 and a molecular weight of 206.28 g/mol.
Based on its molecular formula C13H18O2, 4-Methyl-4-(p-tolyl)pentanoic 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 206.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Methyl-4-(p-tolyl)pentanoic 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 | C13H18O2 |
| Molecular Weight | 206.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
Recommended Standards
- 4-Methyl-3-(p-tolyl)pentanoic acid (CAS 57960-10-8)
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