2,4-Dichloro-D-phenylalanine CAS 114872-98-9
| CAS No. | 114872-98-9 |
| Molecular Formula | C9H9Cl2NO2 |
| Molecular Weight | 234.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,4-Dichloro-D-phenylalanine.
2,4-Dichloro-D-phenylalanine (CAS 114872-98-9), molecular formula C9H9Cl2NO2 and molecular weight 234.08 g/mol, is a CATO reference standard with documented purity and traceability.
2,4-Dichloro-D-phenylalanine (C9H9Cl2NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H9Cl2NO2 |
| Molecular Weight | 234.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
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Recommended Standards
- Methyl 2-amino-2-(3,5-dichlorophenyl)acetate (CAS 1137825-73-0)
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- 2-Amino-2-(2,4-dichlorophenyl)propanoic acid (CAS 1134816-26-4)
- 3-amino-3-(3,4-dichloro-phenyl)-propionic acid (CAS 117391-57-8)
- 7-Benzyl-3-oxa-7-azabicyclo[3.3.1]nonan-9-one (CAS 77716-01-9)
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- 1-(2,6-Difluoro-4-iodopyridin-3-yl)ethan-1-ol (CAS 2863532-61-8)
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