RSS0343 Impurity 1 CAS CATO-C4X-32721
| CAS No. | CATO-C4X-32721 |
| Molecular Formula | C23H22FN3O5 |
| Molecular Weight | 439.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of RSS0343 Impurity 1 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
RSS0343 Impurity 1 (CAS CATO-C4X-32721) is a certified pharmaceutical impurity reference standard with the molecular formula C23H22FN3O5 and a molecular weight of 439.44 g/mol.
Based on its molecular formula C23H22FN3O5, RSS0343 Impurity 1 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 439.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C23H22FN3O5 |
| Molecular Weight | 439.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
- Avibactam Impurity 151 (CAS CATO-C4X-1348151)
- RSS0343 Impurity 2 (CAS CATO-C4X-32722)
- Avibactam Impurity 137 (CAS CATO-C4X-1348137)
- 3-(Pyridin-2-ylsulfonyl)-N-(4-(trifluoromethyl)phenyl)-8-azabicyclo[3.2.1]octane-8-carboxamide (CAS 1170321-92-2)
- Milrinone impurity 39 (CAS CATO-C4X-109139)
- Prostaglandin Impurity 30 (CAS CATO-C4X-199630)
- Metoclopramide impurity 51 (CAS CATO-C4X-141551)
- Bis(perfluorophenyl) 2,2'-oxydiacetate (CAS 158573-58-1)
- p-Decyloxybenzylidene p-toluidine (CAS 53764-62-8)
- (2S,4S)-4-(3-Fluorobenzyl)pyrrolidine-2-carboxylic acid (CAS 688007-58-1)
- (R)-(-)-Cicutoxin (CAS 505-75-9)
- 6-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-ol (CAS 18591-70-3)
- Relugolix Impurity 20 (CAS CATO-C4X-242920)
- Experimental Allergic Encephalitogenic Peptide (CAS 29705-92-8)
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