methyl 1-(2-ethoxy-2-oxoethyl)-3-methyl-6-(4-methylphenyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate CAS 1011399-25-9
| CAS No. | 1011399-25-9 |
| Molecular Formula | C20H21N3O4 |
| Molecular Weight | 367.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including methyl 1-(2-ethoxy-2-oxoethyl)-3-methyl-6-(4-methylphenyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate.
methyl 1-(2-ethoxy-2-oxoethyl)-3-methyl-6-(4-methylphenyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1011399-25-9), molecular formula C20H21N3O4 and molecular weight 367.40 g/mol, is a CATO reference standard with documented purity and traceability.
methyl 1-(2-ethoxy-2-oxoethyl)-3-methyl-6-(4-methylphenyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (C20H21N3O4) contains a flavonoid 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H21N3O4 |
| Molecular Weight | 367.40 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 methyl Standards
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Recommended Standards
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- 1-Amino-3-methyl-4,5-dihydro-1H-benzo[d]azepin-2(3H)-one hydrochloride (CAS 1219381-51-7)
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- 2-(5-(4-Chlorophenyl)isoxazol-3-yl)-N-(pyridin-4-ylmethyl)acetamide (CAS 946316-45-6)
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- (E)-2-cyano-3-(4-methoxyphenyl)-N-(thiazol-2-yl)acrylamide (CAS 307539-21-5)
- Methyl 5-bromo-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylate (CAS 1692192-29-2)
- Repaglinide Impurity 24 (CAS 637301-29-2)
- 6-Iodohexanoic acid (CAS 4224-63-9)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
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