3-(2-Nitrophenyl)pyrazole CAS 59844-05-2
| CAS No. | 59844-05-2 |
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-(2-Nitrophenyl)pyrazole 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.
3-(2-Nitrophenyl)pyrazole (CAS 59844-05-2) is a high-purity analytical reference standard with the molecular formula C9H7N3O2 and a molecular weight of 189.17 g/mol.
Based on its molecular formula C9H7N3O2, 3-(2-Nitrophenyl)pyrazole contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 189.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 4-(2-Nitrophenyl)-1H-pyrazole (CAS 1022318-67-7)
- 4-(4-Nitrophenyl)-1H-pyrazole (CAS 114474-26-9)
- 4-(3-Nitrophenyl)-1H-pyrazole (CAS 1190222-97-9)
- 2-(3-Nitrophenyl)imidazole (CAS 13682-18-3)
- 2-(4-Nitrophenyl)imidazole (CAS 1614-06-8)
- 1-(2-Nitrophenyl)-1h-imidazole (CAS 23309-16-2)
- 1-(2-Nitrophenyl)pyrazole (CAS 25688-17-9)
- 1-(3-Nitrophenyl)-1H-imidazole (CAS 23309-09-3)
Recommended Standards
- 3-(1H-imidazol-5-yl)picolinic acid (CAS 774485-69-7)
- 3-(4-Cyanophenyl)-2-oxopropanoic acid (CAS 43229-87-4)
- 3-(1h-1,2,4-Triazol-5-yl)benzoic acid (CAS 876715-37-6)
- 3-(4H-1,2,4-Triazol-4-yl)benzoic acid (CAS 335255-80-6)
- tert-Butyl 2-methyl-3-[(pentan-2-yl)amino]propanoate (CAS 1221341-78-1)
- 5,6-Dimethylthieno[2,3-d]pyrimidine-4-thiol (CAS 307512-33-0)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-chloro-4-methoxyphenyl)acetamide (CAS 477330-05-5)
- 3,5-dibromo-1-(trideuteriomethyl)-1,2,4-triazole (CAS 2226642-22-2)
- N2,N2-Diethyl-2,5-pyridinediamine (CAS 34392-84-2)
- 4-[4-(Methylsulfonyl)phenyl]-2-thiophenecarbaldehyde (CAS 863990-46-9)
- Amikacin Sulfate (CAS 39831-55-5)
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- 3,6-Dibromo-2-fluorobenzodifluoride (CAS 1803784-35-1)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
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