3-Iodo-4-isobutylbenzoic acid CAS 1131588-08-3
| CAS No. | 1131588-08-3 |
| Molecular Formula | C11H13IO2 |
| Molecular Weight | 304.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Iodo-4-isobutylbenzoic acid.
3-Iodo-4-isobutylbenzoic acid (CAS 1131588-08-3), molecular formula C11H13IO2 and molecular weight 304.12 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H13IO2, 3-Iodo-4-isobutylbenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.12 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C11H13IO2 |
| Molecular Weight | 304.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1989 |
| Halogen Content | I-containing |
Related Iodo Standards
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Recommended Standards
- 4-Butyl-3-iodobenzoic acid (CAS 1131588-07-2)
- Ethyl 4-ethyl-3-iodobenzoate (CAS 1131588-09-4)
- 5-(4-Iodophenyl)pentanoic Acid (CAS 116680-98-9)
- Ethyl 2-ethyl-5-iodobenzoate (CAS 1131587-30-8)
- n-(Isoquinolin-5-yl)-1h-pyrazole-4-carboxamide (CAS 1157923-41-5)
- 1,1,2,2-Tetrafluoroethane (CAS 359-35-3)
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- 2-(4-Bromo-3-(trifluoromethyl)-1h-pyrazol-1-yl)ethanethioamide (CAS 1306606-60-9)
- 3-oxa-1,9-diazaspiro[5.5]undecan-2-one (CAS 1389264-24-7)
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