4-Chloro-3-isobutoxybenzoic acid CAS 1280786-73-3
| CAS No. | 1280786-73-3 |
| Molecular Formula | C11H13ClO3 |
| Molecular Weight | 228.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-3-isobutoxybenzoic acid (CAS 1280786-73-3), molecular formula C11H13ClO3 and molecular weight 228.67 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H13ClO3, 4-Chloro-3-isobutoxybenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 228.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H13ClO3 |
| Molecular Weight | 228.67 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
- 3-(5-Chloro-2-methoxyphenyl)-2-methylpropanoic acid (CAS 1248383-67-6)
- 3-Butoxy-4-chlorobenzoic acid (CAS 1280786-97-1)
- 2-(4-Chloro-3-methoxyphenyl)-2-methylpropanoic acid (CAS 1239963-78-0)
- 4-(2-(2-Chloroethoxy)ethoxy)benzaldehyde (CAS 130413-37-5)
- 3-(Thietan-3-ylamino)propane-1,2-diol (CAS 1854205-14-3)
- Methyl 4-chloro-3-propoxythiophene-2-carboxylate (CAS 1708251-00-6)
- 3-Phenyl-N-(o-tolyl)propanamide (CAS 71231-24-8)
- 1-(2,6-Difluoro-3-hydroxyphenyl)ethan-1-one (CAS 1518232-57-9)
- 1-(3,4-dimethoxybenzyl)-1H-indole-2,3-dione (CAS 26960-67-8)
- 4-Fluoro-3-methoxy-5-methylaniline (CAS 1357144-38-7)
- 2-Methyl-3-phenylthiophene (CAS 16939-16-5)
- Tramadol Impurity 1 (CAS 1884-42-0)
- N-(3-(1H-Imidazol-1-yl)propyl)-N-(7-chloro-4-methoxybenzo[d]thiazol-2-yl)-2-phenylacetamide hydrochloride (CAS 1217053-90-1)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
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