5-(4-Nitrophenyl)pyrazin-2(1H)-one CAS 89541-65-1
| CAS No. | 89541-65-1 |
| Molecular Formula | C10H7N3O3 |
| Molecular Weight | 217.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-(4-Nitrophenyl)pyrazin-2(1H)-one 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.
5-(4-Nitrophenyl)pyrazin-2(1H)-one (CAS 89541-65-1) is a high-purity analytical reference standard with the molecular formula C10H7N3O3 and a molecular weight of 217.18 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-(4-Nitrophenyl)pyrazin-2(1H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 217.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C10H7N3O3 |
| Molecular Weight | 217.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1982 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 1-(3-Nitrophenyl)-1h-pyrazole-4-carbaldehyde (CAS 101872-31-5)
- 6-(4-Nitrophenyl)pyridazin-3-ol (CAS 105537-49-3)
- 5-(3-Nitrophenyl)pyrimidin-2-ol (CAS 1111103-79-7)
- 1-(2-Nitrophenyl)-1H-pyrazole-5-carbaldehyde (CAS 1269292-09-2)
- 1-(4-Nitrophenyl)-1H-pyrazole-5-carbaldehyde (CAS 1269294-31-6)
- 5-(3-Nitrophenyl)furan-2-carbaldehyde (CAS 13148-43-1)
- 6-(2-Nitrophenyl)-2,3-dihydropyridazin-3-one (CAS 147849-76-1)
- 1-(4-Nitrophenyl)-1H-pyrazole-4-carbaldehyde (CAS 37921-21-4)
Recommended Standards
- 5-(4-Nitrophenyl)-1,2,4-triazin-3-amine (CAS 886497-42-3)
- 5-(5-Methylbenzo[d]oxazol-2-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 78620-20-9)
- 5-(4-Methylbenzo[d]oxazol-2-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 78620-19-6)
- 5-(6-Methylbenzo[d]oxazol-2-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 78620-17-4)
- N-(cyclohexylmethyl)-1-methyl-1H-pyrazol-3-amine (CAS 1179300-32-3)
- 2-Cyclopropylthiophene-3-carboxylic acid (CAS 2104675-28-5)
- 5-Methoxy-6-methyl-3-((3-methylcyclohexyl)oxy)-N-(2H-tetrazol-5-yl)benzo[b]thiophene-2-carboxamide (CAS 809281-61-6)
- Ethyl 2-(4-benzylpiperazin-2-yl)acetate (CAS 517866-76-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com