| CAS No. | 19736-06-2 |
| Molecular Formula | C11H13N3O3 |
| Molecular Weight | 235.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 235.24 g/mol gives Ethyl 4-hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 4-hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 19736-06-2), molecular formula C11H13N3O3 and molecular weight 235.24 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 4-hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (C11H13N3O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Ethyl 4-hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C11H13N3O3 |
| Molecular Weight | 235.24 g/mol |
| Appearance | Off-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 methanol, ethanol, DMSO |
| 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.) | 1962 |
| Nitrogen Atoms | 3 |