1-(2-Iodo-5-methoxyphenyl)ethan-1-ol CAS 269391-96-0
| CAS No. | 269391-96-0 |
| Molecular Formula | C9H11IO2 |
| Molecular Weight | 278.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 278.09 g/mol gives 1-(2-Iodo-5-methoxyphenyl)ethan-1-ol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(2-Iodo-5-methoxyphenyl)ethan-1-ol (CAS 269391-96-0), molecular formula C9H11IO2 and molecular weight 278.09 g/mol, is a CATO reference standard with documented purity and traceability.
1-(2-Iodo-5-methoxyphenyl)ethan-1-ol (C9H11IO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H11IO2 |
| Molecular Weight | 278.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | I-containing |
Related Iodo Standards
- 1-Iodo-4-(2-methoxyethoxy)benzene (CAS 102293-99-2)
- 2-Iodo-1-(oxan-2-yl)-1h-imidazole (CAS 1047626-77-6)
- 1-Iodo-4,5-dimethoxy-2-methylbenzene (CAS 116131-35-2)
- 4-Iodo-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole (CAS 1175274-93-7)
- (2-Iodo-3-methoxy-5-methylphenyl)methanol (CAS 119650-45-2)
- 4-Iodo-2-isopropoxyphenol (CAS 1243280-74-1)
- 4-Iodo-3-isopropoxyphenol (CAS 1243329-05-6)
- 3-Iodo-2-isopropoxyphenol (CAS 1243353-32-3)
Recommended Standards
- (S)-3-iodo-7-methyl-4,5,7,8-tetrahydro-1H-oxepino[4,5-c]pyrazole (CAS 2329574-20-9)
- 1-(4-Iodophenoxy)propan-2-ol (CAS 29639-84-7)
- (R)-3-iodo-7-methyl-4,5,7,8-tetrahydro-1H-oxepino[4,5-c]pyrazole (CAS 2329573-94-4)
- 1-(Dimethoxymethyl)-2-iodobenzene (CAS 933672-30-1)
- 4-Chloro-6-(4-fluorophenyl)-2-(1-methoxyethyl)pyrimidine (CAS 1713713-39-3)
- 2-(1H-Pyrazol-1-yl)-1H-benzo[d]imidazol-4-amine (CAS 23861-08-7)
- 1-(1H-Indol-2-yl)-1-(pyridin-4-yl)ethan-1-ol (CAS 79820-57-8)
- Gadobutrol Impurity 40 (CAS 4568-63-2)
- 4-Ethyl-3-(1-hydroxyethyl)-1H-1,2,4-triazol-5(4H)-one (CAS 404595-24-0)
- 5-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-2-carboxylic acid (CAS 1411992-57-8)
- 4-(2,3-epoxypropoxy)benzamide (CAS 28763-58-8)
- 2-Methyl-2-pyridylaminoethanol (CAS 122321-04-4)
- 2-Amino-1-(thiophen-2-yl)ethan-1-one (CAS 313276-47-0)
- Semaglutide impurity 72 (CAS CATO-C4X-222672)
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