Nilestriol Impurity 2 CAS CATO-C4X-24512
| CAS No. | CATO-C4X-24512 |
| Molecular Formula | C23H29BrO2 |
| Molecular Weight | 417.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Nilestriol Impurity 2 (CAS CATO-C4X-24512) is a certified pharmaceutical impurity reference standard with the molecular formula C23H29BrO2 and a molecular weight of 417.38 g/mol.
Structurally, Nilestriol Impurity 2 (C23H29BrO2) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 417.38 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.
Physical & Chemical Properties
| Molecular Formula | C23H29BrO2 |
| Molecular Weight | 417.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
Related Nilestriol Standards
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- Temafloxacin (CAS 108319-06-8)
- Iohexol Impurity 29 (CAS CATO-C4X-166429)
- Doxycycline EP Impurity C (CAS 6543-77-7)
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- 5-Cyclopropoxy-2-(dimethylamino)isonicotinamide (CAS 1243390-59-1)
- 1-[(4-Chlorophenyl)methyl]-1H-pyrazole-4,5-diamine Sulfate (CAS 157469-74-4)
- Dimethyl[3-(piperidin-4-yl)propyl]amine (CAS 42270-35-9)
- 7-Fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline (CAS 2776103-53-6)
- 3-(3-Chlorophenyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepine (CAS 400082-59-9)
- 5-Bromo-3-methylbenzo[d]oxazol-2(3H)-one (CAS 70672-82-1)
- (Thr(PO3H2)231)-Tau Peptide (225-237) trifluoroacetate salt (CAS 1670270-09-3)
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