4-(ethylamino)quinazoline-7-carboxylic acid CAS 1343229-66-2
| CAS No. | 1343229-66-2 |
| Molecular Formula | C11H21N3O2 |
| Molecular Weight | 227.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 227.30 g/mol gives 4-(ethylamino)quinazoline-7-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-(ethylamino)quinazoline-7-carboxylic acid (CAS 1343229-66-2), molecular formula C11H21N3O2 and molecular weight 227.30 g/mol, is a CATO reference standard with documented purity and traceability.
4-(ethylamino)quinazoline-7-carboxylic acid (C11H21N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C11H21N3O2 |
| Molecular Weight | 227.30 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
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