| CAS No. | 1342864-48-5 |
| Molecular Formula | C22H16N2O6 |
| Molecular Weight | 404.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 404.37 g/mol gives 4-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3-nitrobenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3-nitrobenzoic acid (CAS 1342864-48-5), molecular formula C22H16N2O6 and molecular weight 404.37 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3-nitrobenzoic acid (C22H16N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 404.37 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
| Molecular Formula | C22H16N2O6 |
| Molecular Weight | 404.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |