4-Iodo-1-methoxy-2-methylbenzene CAS 75581-11-2
| CAS No. | 75581-11-2 |
| Molecular Formula | C8H9IO |
| Molecular Weight | 248.06 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.
4-Iodo-1-methoxy-2-methylbenzene (CAS 75581-11-2), molecular formula C8H9IO and molecular weight 248.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 4-Iodo-1-methoxy-2-methylbenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 248.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C8H9IO |
| Molecular Weight | 248.06 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | I-containing |
Related Iodo Standards
- (2-Iodo-3-methylphenyl)methanol (CAS 100959-88-4)
- 2-Iodo-4,5-dimethylphenol (CAS 106362-66-7)
- 4-Iodo-2,5-dimethylphenol (CAS 114971-53-8)
- (5-Iodo-2-methylphenyl)hydrazine (CAS 1195491-13-4)
- 5-Iodo-2-methylbenzyl Alcohol (CAS 1260242-01-0)
- (2-Iodo-4-methylphenyl)methanol (CAS 126156-20-5)
- (4-Iodo-2-methylphenyl)methanol (CAS 1261747-54-9)
- (2-Iodo-6-methylphenyl)methanol (CAS 1261794-19-7)
Recommended Standards
- 4,4-Diphosphonobutanoic acid (CAS 64488-79-5)
- 4-Iodo-3,5-dimethylphenol (CAS 80826-86-4)
- 3-Iodo-N,N-dimethylpyridin-4-amine (CAS 906673-15-2)
- 4-Iodophenetole (CAS 699-08-1)
- (2S,3S)-2-Phenylpyrrolidine-3-carboxylic acid;hydrochloride (CAS 2331211-55-1)
- Eplerenone 395665-48-2 (CAS 395665-48-2)
- 2-Oxo-2-(2-(trifluoromethyl)phenyl)acetaldehyde (CAS 795261-41-5)
- 5-(Trifluoromethyl)-1H-pyrrolo[3,2-b]pyridine (CAS 1190315-94-6)
- 2-Chloro-5-(methylsulfonyl)-1,3,4-thiadiazole (CAS 144631-60-7)
- 4-Iodo-2-(methylsulfonyl)pyridine (CAS 1193244-95-9)
- 3-Bromo-4-chloro-5-nitrobenzoic acid (CAS 1523065-07-7)
- tert-Butyl 8-amino-3-azabicyclo[3.2.1]octane-3-carboxylate (CAS 1330763-51-3)
- (2R,3R,4S,5R)-2-methoxytetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 13007-37-9)
- Tirzepatide Impurity 11 TFA salt (CAS CATO-C4X-324011)
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