Cyclo(-Trp-Tyr) TFA salt CAS 20829-53-2(Free Base)
| CAS No. | 20829-53-2(Free Base) |
| Molecular Formula | C20H19N3O3 |
| Molecular Weight | N/A |
| 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 Cyclo(-Trp-Tyr) TFA salt.
Cyclo(-Trp-Tyr) TFA salt (CAS 20829-53-2(Free Base)) is a high-purity analytical reference standard with the molecular formula C20H19N3O3C2HF3O2 and a molecular weight of 463.41 g/mol.
Cyclo(-Trp-Tyr) TFA salt (C20H19N3O3C2HF3O2) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H19N3O3 C2HF3O2 |
| Molecular Weight | 463.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Cyclo Standards
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Recommended Standards
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- (5-Cyclopropoxy-3-methylpyridin-2-yl)methanamine (CAS 1243446-90-3)
- Mianserin (CAS 24219-97-4)
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- 2-methyl-2-(naphthalen-1-yl)propanenitrile (CAS 55615-31-1)
- 2-(4-Fluorophenyl)-5-methyl-1H-imidazole-4-carboxylic acid (CAS 933751-61-2)
- Tetrapeptide-30/Tegopep (CAS 1036207-61-0)
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