5-Methyl-1-(4-nitrophenyl)-1H-pyrazole CAS 13788-99-3
| CAS No. | 13788-99-3 |
| Molecular Formula | C10H9N3O2 |
| Molecular Weight | 203.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Methyl-1-(4-nitrophenyl)-1H-pyrazole (CAS 13788-99-3), a certified reference material (molecular formula C10H9N3O2, MW 203.20 g/mol) for analytical method development and quality control.
5-Methyl-1-(4-nitrophenyl)-1H-pyrazole (C10H9N3O2) 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 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.
CATO manufactures 5-Methyl-1-(4-nitrophenyl)-1H-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.
Physical & Chemical Properties
| Molecular Formula | C10H9N3O2 |
| Molecular Weight | 203.20 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.) | 1960 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 1-(3-Methyl-4-nitrophenyl)-1h-imidazole (CAS 102791-92-4)
- 4-Methyl-1-(2-nitrophenyl)-1H-pyrazole (CAS 103262-51-7)
- 5-Methyl-1-(2-nitrophenyl)-1h-pyrazole (CAS 1247439-67-3)
- 3-(4-Methyl-3-nitrophenyl)-1h-pyrazole (CAS 1249978-17-3)
- 1-Methyl-5-(4-nitrophenyl)-1h-pyrazole (CAS 1339768-47-6)
- 4-Methyl-1-(4-nitrophenyl)-1H-pyrazole (CAS 13808-73-6)
- 1-(2-Methyl-4-nitrophenyl)-1H-imidazole (CAS 154164-39-3)
- 1-(4-methyl-3-nitrophenyl)-1H-pyrazole (CAS 1803584-68-0)
Recommended Standards
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- 4-(2-chlorophenyl)-2-(pyrrolidin-2-yl)-1H-imidazole hydrochloride (CAS 1315365-95-7)
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- (S)-Methyl 2-(cyclopropyl(4-methylpyridin-2-yl)methyl)-5-hydroxy-1-oxo-1,2,3,4-tetrahydroisoquinoline-7-carboxylate (CAS 2766993-11-5)
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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