4-ethoxy-3-methoxyaniline CAS 19782-77-5
| CAS No. | 19782-77-5 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 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 4-ethoxy-3-methoxyaniline.
4-ethoxy-3-methoxyaniline (CAS 19782-77-5) is a high-purity analytical reference standard with the molecular formula C9H13NO2 and a molecular weight of 167.21 g/mol.
The molecular framework of 4-ethoxy-3-methoxyaniline (C9H13NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related ethoxy Standards
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Recommended Standards
- 1-Pentyl-1H-pyrrole-2,5-dione (CAS 19775-00-9)
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- (R)-(Tetrahydro-2H-pyran-3-yl)methyl benzoate (CAS 1612884-82-8)
- 4-Ethynyl-1-isopropoxy-2-methoxybenzene (CAS 218903-25-4)
- Methyl 2-bromo-4-cyclopropylbenzoate (CAS 1563534-75-7)
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- Ethyl 2-((4-(dimethylamino)phenyl)amino)-2-oxoacetate (CAS 24451-13-6)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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