Dalilesen Impurity 44 CAS CATO-C4X-301044
| CAS No. | CATO-C4X-301044 |
| Molecular Formula | C18H23N5O3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Dalilesen Impurity 44 (CAS CATO-C4X-301044) is a certified pharmaceutical impurity reference standard with the molecular formula C18H23N5O3C2HF3O2 and a molecular weight of 471.44 g/mol.
Dalilesen Impurity 44 (C18H23N5O3C2HF3O2) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 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.
As a certified reference material (CRM), Dalilesen Impurity 44 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H23N5O3 C2HF3O2 |
| Molecular Weight | 471.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
Related Dalilesen Standards
- Dalilesen Impurity 2 (CAS 1293284-55-5)
- Dalilesen impurity 38 (CAS 1505484-57-0)
- Dalilesen Impurity 8 (CAS 1505484-72-9)
- Dalilesen Impurity 7 (CAS 1505484-85-4)
- Dalilesen impurity 39 (CAS 1505484-96-7)
- Dalilesen Impurity 5 (CAS 1505485-09-5)
- Dalilesen Impurity 3 (CAS 1788104-74-4)
- Dalilesen Impurity 6 (CAS 1788104-75-5)
Recommended Standards
- Oseltamivir Impurity 101 (CAS CATO-C4X-1720101)
- Rimegepant Impurity 137 (CAS 1373116-08-5)
- Azilsartan Impurity 172 (CAS CATO-C4X-1096172)
- Caspofungin Acetate C0 Analog Acetate (CAS CATO-C4X-15753)
- 3-Bromo-6-hydroxy-2-methylbenzaldehyde (CAS 137644-94-1)
- 1-[2-(Trimethylsilyl)ethynyl]cyclopentan-1-ol (CAS 71321-24-9)
- (S)-6-((benzyloxy)carbonyl)-6-azaspiro[2.5]Octane-1-carboxylic acid (CAS 1539277-98-9)
- 2,6-Dichloro-5-fluoro-N-(4-methoxyphenyl)nicotinamide (CAS 724430-01-7)
- (E)-N-[4-amino-1-(pyridin-2-yl)butylidene]hydroxylamine hydrochloride (CAS 374064-00-3)
- Liraglutide Impurity 18 TFA Salt (CAS CATO-C4X-199218)
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