Ethyl 4-chloro-3-methyl-1-(p-tolyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate CAS 866040-20-2
| CAS No. | 866040-20-2 |
| Molecular Formula | C17H16ClN3O2 |
| Molecular Weight | 329.78 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.
Ethyl 4-chloro-3-methyl-1-(p-tolyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 866040-20-2), molecular formula C17H16ClN3O2 and molecular weight 329.78 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 4-chloro-3-methyl-1-(p-tolyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (C17H16ClN3O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Ethyl 4-chloro-3-methyl-1-(p-tolyl)-1H-pyrazolo[3,4-b]pyridine-5-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H16ClN3O2 |
| Molecular Weight | 329.78 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
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Recommended Standards
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- Amoxapine Impurity 10 (8-Hydroxyamoxapine) (CAS 61443-78-5)
- N-(3-([1,2,4]Triazolo[1,5-a]pyrimidin-6-yl)propyl)-2-(2-chlorophenyl)acetamide (CAS 2034376-30-0)
- Jasmolin I (CAS 4466-14-2)
- 2-{3-oxo-2h,3h,5h,6h,7h,8h,9h-[1,2,4]triazolo[4,3-a]azepin-2-yl}acetic acid (CAS 950114-53-1)
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- cis-N-Cbz-1,4-cyclohexanediamine (CAS 149423-70-1)
- 4-(2-Chloro-4-fluorophenyl)-7-hydroxy-2H-chromen-2-one (CAS 2304622-80-6)
- 1-Acetylpiperidin-4-yl 4-methylbenzenesulfonate (CAS 92531-11-8)
- 1-Bromo-3-cyclopropoxy-2-nitrobenzene (CAS 1243470-85-0)
- Tert-butyl (2,2-difluoro-4-hydroxycyclohexyl)carbamate (CAS 2167944-05-8)
- 6-Bromobenzo[d][1,3]dioxole-5-carboxylic Acid (CAS 60546-62-5)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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