Halcinonide Impurity N2 CAS 982-91-2
| CAS No. | 982-91-2 |
| Molecular Formula | C21H26ClFO5 |
| Molecular Weight | 412.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Halcinonide Impurity N2 (CAS 982-91-2, C21H26ClFO5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Halcinonide Impurity N2 (C21H26ClFO5) contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 412.88 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C21H26ClFO5 |
| Molecular Weight | 412.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F/Cl-containing |
Related Halcinonide Standards
- Halcinonide Impurity N1 (CAS 3093-36-5)
- Halcinonide Impurity 14 (CAS CATO-C4X-279514)
- Halcinonide Impurity 11 (CAS CATO-C4X-279511)
- Halcinonide Impurity 9 (CAS CATO-C4X-27959)
- Halcinonide Impurity N3 (CAS 2414269-43-3)
- Halcinonide Impurity 16 (CAS CATO-C4X-279516)
- Halcinonide Impurity 13 (CAS CATO-C4X-279513)
- Halcinonide Impurity 17 (CAS CATO-C4X-279517)
Recommended Standards
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- 2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one (CAS 919958-83-1)
- Flumetasone Impurity 10 (CAS 382631-11-0)
- 2,2-Dibromo-1-(5-(2,4-dichlorophenyl)furan-2-yl)ethan-1-one (CAS 338756-44-8)
- Loratadine Impurity 66 (CAS 65214-82-6)
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- Peramivir Impurity 7 (CAS 383910-22-3)
- Tetrahydroamentoflavone (CAS 48236-96-0)
- Sodium 4-Chlorophenoxyacetate (CAS 13730-98-8)
- 2-Fluoro-5-(pyridin-3-yl)aniline (CAS 264616-96-8)
- methyl 4-methoxypyrimidine-2-carboxylate (CAS 500160-56-5)
- 3-chloro-2-(methoxymethyl)aniline hydrochloride (CAS 1384713-40-9)
- 4-[2-Oxo-2-(1-piperidinyl)ethoxy]benzoic acid (CAS 29936-93-4)
- His-Aib-Semaglutide (CAS CATO-C4X-2226220)
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