Ethyl 5-aminopyrazolo[1,5-a]pyridine-3-carboxylate CAS 1101120-35-7
| CAS No. | 1101120-35-7 |
| Molecular Formula | C10H11N3O2 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 5-aminopyrazolo[1,5-a]pyridine-3-carboxylate (CAS 1101120-35-7), molecular formula C10H11N3O2 and molecular weight 205.21 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 5-aminopyrazolo[1,5-a]pyridine-3-carboxylate (C10H11N3O2) 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 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 | C10H11N3O2 |
| Molecular Weight | 205.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 3-aminopyrazolo[1,5-a]pyridine-2-carboxylate (CAS 136548-63-5)
- Ethyl 2-aminopyrazolo[1,5-a]pyridine-3-carboxylate (CAS 1547331-23-6)
- Ethyl 6-aminopyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1083196-34-2)
- Ethyl 7-aminopyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1196153-97-5)
- Ethyl 2-aminopyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1260169-02-5)
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