4-Nitro-1-vinyl-1H-pyrazole CAS 117451-93-1
| CAS No. | 117451-93-1 |
| Molecular Formula | C5H5N3O2 |
| Molecular Weight | 139.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Nitro-1-vinyl-1H-pyrazole (C5H5N3O2) 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 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).
4-Nitro-1-vinyl-1H-pyrazole (CAS 117451-93-1), molecular formula C5H5N3O2 and molecular weight 139.11 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Nitro-1-vinyl-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 | C5H5N3O2 |
| Molecular Weight | 139.11 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Related Nitro Standards
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Recommended Standards
- 5-cyano-4,5-dihydro-3-isoxazolecarboxamide (CAS 1119442-06-6)
- 3-(2-nitroethenyl)furan (CAS 122016-40-4)
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- 2-Hydroxypyrimidine-5-carboxamide (CAS 1233198-67-8)
- Methyl 3-aminoisoxazole-5-carboxylate (CAS 203586-95-2)
- 3-Oxo-N-phenyl-3-[2-(phenylamino)-1,3-thiazol-5-yl]propanamide (CAS 338976-84-4)
- 1-Butyl-3-methyl-1h-pyrazole-4-carboxylic acid (CAS 113100-46-2)
- (D-Arg0,Hyp3,β-(2-thienyl)-Ala5·8,D-Phe7)-Bradykinin (CAS 103412-36-8)
- Uridine 5'-Triphosphate Disodium Salt (CAS 36051-69-1)
- 3-(5-Oxo-1-propylpyrrolidin-2-yl)propanoic acid (CAS 1823832-81-0)
- 1-Methoxy-4-(4-methoxyphenyl)isoquinolin-5-ol (CAS 656233-93-1)
- 3-Phenyl-8-(phenylmethyl)-8-azabicyclo[3.2.1]octan-3-ol (CAS 179482-90-7)
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- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
Why CATO?
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