5-DTAF CAS 51306-35-5
| CAS No. | 51306-35-5 |
| Molecular Formula | C23H12Cl2N4O5 |
| Molecular Weight | 495.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-DTAF (CAS 51306-35-5), molecular formula C23H12Cl2N4O5 and molecular weight 495.27 g/mol, is a CATO reference standard with documented purity and traceability.
5-DTAF (C23H12Cl2N4O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C23H12Cl2N4O5 |
| Molecular Weight | 495.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Recommended Standards
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- 3-(((2,6-Dichlorobenzyl)sulfinyl)methyl)-5-((2,6-dichlorobenzyl)thio)-4-methyl-4H-1,2,4-triazole (CAS 344271-79-0)
- 5-{4-[(2,4-dichlorophenyl)methoxy]phenyl}-3-{[4-(trifluoromethyl)phenyl]methyl}-2,3-dihydro-1,3,4-oxadiazol-2-one (CAS 866152-89-8)
- ethyl 3-(methylsulfanyl)prop-2-enoate (CAS 136115-65-6)
- 5-Acetyl-1-benzylpyrimidine-2,4(1H,3H)-dione (CAS 338399-29-4)
- (1-Ethyl-1H-benzo[d]imidazol-2-yl)methanamine (CAS 883538-95-2)
- Diphenyltrisulfane (CAS 20057-88-9)
- Ethyl 4,7-dichloro-2-methylquinoline-3-carboxylate (CAS 50593-27-6)
- tert-Butyl 3-iodo-2,(3)5-dihydro-1H-pyrrole-1-carboxylate (CAS 1196146-94-7)
- 2-Chloro-3-cyclopropoxy-4-ethylpyridine (CAS 1243462-58-9)
- 5,6-Dimethyl-[2,2'-bipyridine]-3,3'-diol (CAS 666734-80-1)
- 2,2,2-Trifluoro-N-(6-oxo-6-phenylhexyl)acetamide (CAS 39510-50-4)
- Palmitoyl Tripeptide -5 · 2 TFA (CAS 623172-56-5)
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