3-tert-Butyl-1-(4-Nitrophenyl)-1H-pyrazol-5-amine CAS 251658-55-6
| CAS No. | 251658-55-6 |
| Molecular Formula | C13H16N4O2 |
| Molecular Weight | 260.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-tert-Butyl-1-(4-Nitrophenyl)-1H-pyrazol-5-amine (CAS 251658-55-6), molecular formula C13H16N4O2 and molecular weight 260.29 g/mol, is a CATO reference standard with documented purity and traceability.
3-tert-Butyl-1-(4-Nitrophenyl)-1H-pyrazol-5-amine (C13H16N4O2) contains a nitrogen-containing heterocyclic scaffold, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 3-tert-Butyl-1-(4-Nitrophenyl)-1H-pyrazol-5-amine 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 | C13H16N4O2 |
| Molecular Weight | 260.29 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 3-tert-Butyl-1-(3-Nitrophenyl)-1H-pyrazol-5-amine (CAS 476637-05-5)
- 4-((2-((Tert-butoxycarbonyl)amino)ethyl)amino)-4-oxobutanoic acid (CAS 891781-87-6)
- 3-Morpholino-1-phenylpyrrolidine-2,5-dione (CAS 53541-45-0)
- 4-((2-(1H-Indol-3-yl)ethyl)amino)-4-oxobutanoic acid (CAS 92256-33-2)
- 7-methoxybenzothiophene-2-sulfonamide (CAS 96803-65-5)
- 3-[(4-tert-butylphenyl)methylidene]-1h,2h,3h-cyclopenta[b]quinoline-9-carboxylic acid (CAS 647036-26-8)
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- 2-(((4-Bromophenyl)sulfonyl)methyl)-5-nitrofuran (CAS 61266-28-2)
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- 1-OXA-SPIRO[4.5]DEC-7-ENE (CAS 87151-63-1)
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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
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