6-Hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]quinolin-4(9H)-one CAS 112447-05-9
| CAS No. | 112447-05-9 |
| Molecular Formula | C12H11N3O2 |
| Molecular Weight | 229.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]quinolin-4(9H)-one (CAS 112447-05-9), molecular formula C12H11N3O2 and molecular weight 229.23 g/mol, is a CATO reference standard with documented purity and traceability.
6-Hydroxy-1,3-dimethyl-1H-pyrazolo[3,4-b]quinolin-4(9H)-one (C12H11N3O2) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C12H11N3O2 |
| Molecular Weight | 229.23 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Related Hydroxy Standards
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- 2-Hydroxy-3-methoxy-5-(pyridin-4-yl)benzaldehyde (CAS 1093118-26-3)
- 5-Acetyl-6-hydroxy-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-4-one (CAS 128099-76-3)
- 1-(4-Hydroxy-10,10a-dihydropyrimido-[1,2-a]benzimidazol-3-yl)ethanone (CAS 1306739-29-6)
- Methyl 3-hydroxy-6-phenylpicolinate (CAS 144233-92-1)
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Recommended Standards
- 6-Methoxy-3-methyl-1H-pyrazolo[3,4-b]quinolin-4(9H)-one (CAS 112447-00-4)
- Methyl 3-(5-aminopyrazin-2-yl)benzoate (CAS 1125435-74-6)
- N-(3-(2-Hydroxypyrimidin-5-yl)phenyl)acetamide (CAS 1111113-88-2)
- 2-Methyl-1-nitro-4-phenoxybenzene (CAS 112880-83-8)
- 8-Bromo-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-amine (CAS 33631-96-8)
- 3-Fluoro-5-(phenylethynyl)pyridin-2-amine (CAS 1686186-44-6)
- 1-Benzyl-4-phenyl-4-piperidinecarboxylic Acid Hydrate (CAS 1609400-83-0)
- 5-Azaspiro[2.3]hexane, trifluoroacetic acid (CAS 1466514-80-6)
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- 5-(Methylsulfonyl)-4-phenylpyrimidin-2-amine (CAS 106073-32-9)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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