1-(9-Methyl-2-nitro-9H-fluoren-9-yl)ethanone CAS 21846-27-5
| CAS No. | 21846-27-5 |
| Molecular Formula | C17H21I3N2O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 909.28 g/mol gives 1-(9-Methyl-2-nitro-9H-fluoren-9-yl)ethanone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(9-Methyl-2-nitro-9H-fluoren-9-yl)ethanone (CAS 21846-27-5) is a high-purity analytical reference standard with the molecular formula C17H21I3N2O5C7H17NO5 and a molecular weight of 909.28 g/mol.
Structurally, 1-(9-Methyl-2-nitro-9H-fluoren-9-yl)ethanone (C17H21I3N2O5C7H17NO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 909.28 g/mol, it falls into the 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C17H21I3N2O5 C7H17NO5 |
| Molecular Weight | 909.28 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
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