5-Methyl-4-nitro-1H-pyrazole-3-carbonitrile CAS 28668-15-7
| CAS No. | 28668-15-7 |
| Molecular Formula | C5H4N4O2 |
| Molecular Weight | 152.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Methyl-4-nitro-1H-pyrazole-3-carbonitrile (CAS 28668-15-7) is a high-purity analytical reference standard with the molecular formula C5H4N4O2 and a molecular weight of 152.11 g/mol.
The molecular framework of 5-Methyl-4-nitro-1H-pyrazole-3-carbonitrile (C5H4N4O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 5-Methyl-4-nitro-1H-pyrazole-3-carbonitrile 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 | C5H4N4O2 |
| Molecular Weight | 152.11 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 4 |
Related Methyl Standards
- 4-Nitro-1H-pyrazole-1-acetonitrile (CAS 1001500-47-5)
- 2-(3-Nitro-1h-pyrazol-1-yl)acetonitrile (CAS 1006956-03-1)
- 3-Nitro-2-pyridinecarboxaldehyde (CAS 10261-94-6)
- 4-Nitro-2-pyridinecarboxaldehyde (CAS 108338-19-8)
- 1-Methyl-3-nitro-1H-pyrazole-5-carbonitrile (CAS 1245771-75-8)
- 1-Methyl-5-nitro-1H-pyrazole-3-carbonitrile (CAS 1245772-35-3)
- 131747-64-3 6-nitro-2-pyridinecarboxaldehyde (CAS 131747-64-3)
- 1-Methyl-4-nitro-1h-pyrazole-3-carbonitrile (CAS 151599-40-5)
Recommended Standards
- 5-Amino-3-cyanofuran-2-carboxylic acid (CAS 861571-05-3)
- 5-Nitronicotinaldehyde (CAS 87883-20-3)
- 5,6-dihydropyrazolo[1,5-d][1,2,4]triazine-4,7-dione (CAS 56976-96-6)
- 5-Nitropyridine-2-carbaldehyde (CAS 35969-75-6)
- Demeton-O (CAS 298-03-3)
- H-p-Fluoro-D-Phe-OMe · HCl (CAS 176896-72-3)
- (2,4-Dimethylphenyl)(furan-3-yl)methanol (CAS 1250626-45-9)
- 3-(1H-Indol-3-yl)-2-methacrylamidopropanoic acid (CAS 77890-34-7)
- 5-(Trifluoromethyl)-3-{[5-(trifluoromethyl)pyridin-2-yl]sulfanyl}pyridine-2-carbonitrile (CAS 338396-86-4)
- 4-[(4-methyl-1,3-thiazol-5-yl)formamido]butanoic acid hydrochloride (CAS 1803585-69-4)
- 1-(Aminomethyl)-3,3-dipropylcyclobutane-1-carboxylic acid (CAS 1481894-29-4)
- 1119391-69-3 5-oxo-3-(propan-2-yl)-2,5-dihydro-1H-pyrazole-1-carbothioamide MS-8755 (CAS 1119391-69-3)
- Doxofylline Impurity 42 (CAS 56548-04-0)
- Neuropeptide FF (CAS 99566-27-5)
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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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com