3-Cyclopropyl-6-ethyl-1-(4-methoxyphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid CAS 1018151-28-4
| CAS No. | 1018151-28-4 |
| Molecular Formula | C19H19N3O3 |
| Molecular Weight | 337.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 337.37 g/mol gives 3-Cyclopropyl-6-ethyl-1-(4-methoxyphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Cyclopropyl-6-ethyl-1-(4-methoxyphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1018151-28-4), molecular formula C19H19N3O3 and molecular weight 337.37 g/mol, is a CATO reference standard with documented purity and traceability.
3-Cyclopropyl-6-ethyl-1-(4-methoxyphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (C19H19N3O3) contains a steroid core, 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 | C19H19N3O3 |
| Molecular Weight | 337.37 g/mol |
| Appearance | Pale yellow to 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
Related Cyclopropyl Standards
- Methyl 3-cyclopropyl-1-(4-methoxyphenyl)-6-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1011397-04-8)
- 2-{cyclopropyl[(9h-fluoren-9-ylmethoxy)carbonyl]amino}acetic acid (CAS 1342767-08-1)
- Methyl 6-cyclopropyl-1-(4-methoxyphenyl)-3-methyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 937600-12-9)
- 6-Cyclopropyl-1-(4-methoxyphenyl)-3-methyl-1h-pyrazolo[3,4-b]pyridine-4-carbohydrazide (CAS 937600-21-0)
- N2-Cyclopropyl-N4-(2,4-difluorobenzyl)thiazole-2,4-dicarboxamide (CAS 1251616-02-0)
- Ethyl 4-(4-(5-cyclopropyl-1,3,4-thiadiazol-2-yl)piperidin-1-yl)-4-oxobutanoate (CAS 1203004-50-5)
- N-cyclopropyl-1-(2,6-dichlorobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 400086-03-5)
- N-Cyclopropyl-1-[(3,4-dichlorophenyl)methyl]-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 338783-55-4)
Recommended Standards
- 1-Boc-4-(3-methoxy-4-nitrophenyl)piperazine (CAS 1017782-79-4)
- Ethyl 2-(4-ethoxyphenyl)-1-oxo-1,2-dihydroisoquinoline-4-carboxylate (CAS 1030096-09-3)
- 2-(1-(3,4,5-Trimethoxybenzoyl)piperidin-4-yl)acetic acid (CAS 1030422-06-0)
- 2-Phenyl-5-propyl-3-(pyridin-4-yl)tetrahydro-4H-pyrrolo[3,4-d]isoxazole-4,6(5H)-dione (CAS 1005127-75-2)
- 1-Chloro-N,N-dimethylisoquinoline-4-carboxamide (CAS 240799-61-5)
- 4-hydroxy-1H-pyrazolo[3,4-b]pyridine-6-carboxylic acid (CAS 1781790-67-7)
- 3-Chloro-5-(cyclopropylmethoxy)pyridazine (CAS 1346691-28-8)
- 2-(2,4-Dimethylbenzyl)-6-methyl-4,5-dihydropyridazin-3(2H)-one (CAS 859956-07-3)
- CHIR 124 (CAS 405168-58-3)
- Dimethyl (4-bromobenzoyl)phosphonate (CAS 33493-31-1)
- 1,1,3,3-Tetramethyl propane-1,1,3,3-tetracarboxylate (CAS 28781-92-2)
- 1-(4-Chlorophenyl)-2-(3-(trifluoromethyl)phenoxy)ethan-1-one (CAS 338400-72-9)
- 4-Chloro-3-(chloromethyl)-5-methoxypyridine (CAS 1805566-80-6)
- Tirzepatide Impurity 47 (CAS CATO-C4X-324047)
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