N1,N2-bis(4-methoxyphenyl)oxalamide CAS 3299-63-6
| CAS No. | 3299-63-6 |
| Molecular Formula | C16H16N2O4 |
| Molecular Weight | 300.31 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.
N1,N2-bis(4-methoxyphenyl)oxalamide (CAS 3299-63-6) is a high-purity analytical reference standard with the molecular formula C16H16N2O4 and a molecular weight of 300.31 g/mol.
The molecular framework of N1,N2-bis(4-methoxyphenyl)oxalamide (C16H16N2O4) is characterized by a flavonoid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C16H16N2O4 |
| Molecular Weight | 300.31 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Recommended Standards
- N1,N2-bis(2-methoxyphenyl)oxalamide (CAS 21021-99-8)
- N-Decyl-4-methoxyaniline (CAS 733-40-4)
- N'-[(1E)-1-[4-(Pyrimidin-2-yloxy)phenyl]ethylidene]ethoxycarbohydrazide (CAS 866151-60-2)
- Salmeterol Impurity (CAS 63295-94-3)
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