5-(2-Nitro-phenyl)-2h-pyrazol-3-ylamine CAS 1107523-90-9
| CAS No. | 1107523-90-9 |
| Molecular Formula | C9H8N4O2 |
| Molecular Weight | 204.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 204.19 g/mol gives 5-(2-Nitro-phenyl)-2h-pyrazol-3-ylamine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(2-Nitro-phenyl)-2h-pyrazol-3-ylamine (CAS 1107523-90-9), molecular formula C9H8N4O2 and molecular weight 204.19 g/mol, is a CATO reference standard with documented purity and traceability.
5-(2-Nitro-phenyl)-2h-pyrazol-3-ylamine (C9H8N4O2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H8N4O2 |
| Molecular Weight | 204.19 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.) | 1989 |
| Nitrogen Atoms | 4 |
Related Nitro Standards
- 1-Benzyl-3-nitro-1H-1,2,4-triazole (CAS 136118-54-2)
- 2-(4-Nitro-1h-pyrazol-1-yl)aniline (CAS 62537-74-0)
- 2-Nitro-5-(1H-pyrazol-1-yl)aniline (CAS 934992-78-6)
- 3-(4-Methyl-3-nitro-phenyl)-1H-[1,2,4]triazole (CAS 845884-77-7)
- 3-(4-Nitro-1H-pyrazol-1-yl)aniline (CAS 62537-75-1)
- 4-(5-Nitro-1H-imidazol-4-yl)aniline (CAS 72798-75-5)
- 4-Nitro-1-phenyl-1H-pyrazol-3-amine (CAS 701917-04-6)
- 5-Nitro-2-(1H-pyrrol-1-yl)phenol (CAS 106981-64-0)
Recommended Standards
- 3-Methyl-1-(pyrimidin-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1104281-75-5)
- (1S)-1-[2-(Trifluoromethyl)phenyl]propan-1-ol (CAS 1114384-60-9)
- 2-Isopropyl-4-(trifluoromethyl)phenol (CAS 1101062-05-8)
- (R)-1-(4-(Trifluoromethyl)phenyl)propan-1-ol (CAS 112777-69-2)
- (R)-(3-Aminopyrrolidin-1-yl)(cyclobutyl)methanone hydrochloride (CAS 1349702-33-5)
- N-(2-Phenylacetoxy)-2-(quinolin-8-yloxy)acetimidamide (CAS 88758-62-7)
- 4-((4-(Tert-butyl)benzyl)oxy)-3-methoxybenzaldehyde (CAS 781653-76-7)
- N-{[5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl}-2,6-difluoro-N-(4-methoxyphenyl)benzamide (CAS 956611-91-9)
- cis-Octahydropyrrolo[3,4-b][1,4]oxazine dihydrochloride (CAS 158182-89-9)
- 5,7-Difluoro-3,4-dihydronaphthalen-1(2H)-one (CAS 110931-79-8)
- 3-Fluorobicyclo[1.1.1]Pentane-1-carbonitrile (CAS 146038-52-0)
- Ethyl 2-(2-amino-2-oxoethyl)-1H-pyrrole-3-carboxylate (CAS 65523-04-8)
- 1-[4-(Morpholine-4-carbonyl)phenyl]pyrrolidin-2-one (CAS 478039-69-9)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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