(S)-2-Amino-3-(3,5-diiodophenyl)propanoic acid CAS 20704-71-6
| CAS No. | 20704-71-6 |
| Molecular Formula | C9H9I2NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| 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.
(S)-2-Amino-3-(3,5-diiodophenyl)propanoic acid (CAS 20704-71-6) is a high-purity analytical reference standard with the molecular formula C9H9I2NO3H2O and a molecular weight of 450.99 g/mol.
Structurally, (S)-2-Amino-3-(3,5-diiodophenyl)propanoic acid (C9H9I2NO3H2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 450.99 g/mol, it falls into the moderately-high-molecular-weight range. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H9I2NO3 H2O |
| Molecular Weight | 450.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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 methanol, ethanol, DMSO |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- tert-butyl 4-formyl-1h-pyrazole-1-carboxylate (CAS 821767-61-7)
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- 5-(Benzylthio)-1H-1,2,4-triazole-3(2H)-thione (CAS 112729-17-6)
- 4-(4-bromophenyl)-1-methyl-1H-imidazol-2-amine (CAS 1260877-71-1)
- (S)-1-(2,6-dimethylphenyl)-2-methoxyethan-1-amine (CAS 1270283-15-2)
- (4-isobutylphenyl)magnesium bromide (CAS 863780-45-4)
- 3-(5-(4-(tert-butoxycarbonyl)-2-oxopiperazin-1-yl)furan-2-yl)propanoic acid (CAS CATO-C3D-262284)
- 5-Amino-2-chloro-4-fluorophenol (CAS 84478-72-8)
- Fluticasone Propionate EP Impurity E (CAS 105613-90-9)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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