3-Methyl-5-nitro-1-phenyl-1h-pyrazolo[3,4-b]pyridine CAS 98157-52-9
| CAS No. | 98157-52-9 |
| Molecular Formula | C13H10N4O2 |
| Molecular Weight | 254.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-5-nitro-1-phenyl-1h-pyrazolo[3,4-b]pyridine (CAS 98157-52-9) is a high-purity analytical reference standard with the molecular formula C13H10N4O2 and a molecular weight of 254.24 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 3-Methyl-5-nitro-1-phenyl-1h-pyrazolo[3,4-b]pyridine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 254.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-Methyl-5-nitro-1-phenyl-1h-pyrazolo[3,4-b]pyridine 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.
Physical & Chemical Properties
| Molecular Formula | C13H10N4O2 |
| Molecular Weight | 254.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |
Related Methyl Standards
- 5-Nitro-3-(p-tolyl)benzo[d]isoxazole (CAS 112606-69-6)
- 1-Methyl-4-nitro-N-((tetrahydrofuran-2-yl)methyl)-1H-pyrazole-5-carboxamide (CAS 1245823-87-3)
- 1-Methyl-2-nitro-6-phenylimidazo[4,5-B]pyridine (CAS 129018-59-3)
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Recommended Standards
- 3-Methyl-1-(pyridin-2-yl)-1h-pyrazolo[3,4-b]pyridine-5-carboxylic acid (CAS 926260-09-5)
- 3-Methyl-6-phenyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 923884-15-5)
- 3-Hydroxy-2-(2-hydroxyphenyl)-4H-1-benzopyran-4-one (CAS 6068-76-4)
- 3-Nitrodibenzo[b,f]oxepin-1-amine (CAS 361374-55-2)
- 2-((Carbamoyloxy)methyl)-2-methylhexyl prop-2-yn-1-ylcarbamate (CAS 25385-05-1)
- 3-Methoxy-5-methyl-2-nitrophenol (CAS 1823900-84-0)
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- 5,10,15,20-Tetra(4-methylphenyl)-21H,23H-porphine nickel (CAS 58188-46-8)
- 2-Chloro-N-(3-cyano-1-((tetrahydrofuran-2-yl)methyl)-4,5,6,7-tetrahydro-1H-indol-2-yl)acetamide (CAS 1087784-66-4)
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- 7-Methoxy-3,4-dihydro-1,8-naphthyridin-2(1H)-one (CAS 1075237-63-6)
- 3-(3-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)benzoyl)benzonitrile (CAS 898761-50-7)
- endo-Ser39-Tirzepatide (CAS CATO-CPTD788935)
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