4-Methoxy-N-(4-methoxyphenyl)-N-(4-nitrophenyl)aniline CAS 20440-91-9
| CAS No. | 20440-91-9 |
| Molecular Formula | C20H18N2O4 |
| Molecular Weight | 350.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, 4-Methoxy-N-(4-methoxyphenyl)-N-(4-nitrophenyl)aniline is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 350.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
4-Methoxy-N-(4-methoxyphenyl)-N-(4-nitrophenyl)aniline (CAS 20440-91-9) is a high-purity analytical reference standard with the molecular formula C20H18N2O4 and a molecular weight of 350.37 g/mol.
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 | C20H18N2O4 |
| Molecular Weight | 350.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 4-(4-(Dimethoxymethyl)pyrimidin-2-yl)phenyl benzoate (CAS 477870-43-2)
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- 2-(azidomethyl)-6-chloroimidazo[1,2-a]pyridine (CAS 1250956-13-8)
- 5-Bromo-N-(4-methoxybenzyl)pyridin-2-amine (CAS 503039-05-2)
- 8-Methoxythiochroman-4-one (CAS 66715-59-1)
- AB-005 Azepane Isomer (CAS 1445751-74-5)
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- 1-Cyclohexyl-3-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)urea (CAS 93004-68-3)
- 4-Nitro-3-(trifluoromethyl)benzaldehyde (CAS 101066-57-3)
- (Leu31,Pro3?)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 125580-28-1)
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