3-Methyl-5-nitro-1H-pyrazole CAS 34334-96-8
| CAS No. | 34334-96-8 |
| Molecular Formula | C4H5N3O2 |
| Molecular Weight | 127.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Methyl-5-nitro-1H-pyrazole (CAS 34334-96-8), a certified reference material (molecular formula C4H5N3O2, MW 127.10 g/mol) for analytical method development and quality control.
3-Methyl-5-nitro-1H-pyrazole (C4H5N3O2) 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).
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.
As a certified reference material (CRM), 3-Methyl-5-nitro-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H5N3O2 |
| Molecular Weight | 127.10 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 5-Methyl-3-nitro-1H-pyrazole (CAS 1048925-02-5)
- 1-Methyl-2-nitro-1H-imidazole (CAS 1671-82-5)
- 1-methyl-3-nitro-pyrazole (CAS 54210-32-1)
- 1-Methyl-4-nitro-1H-pyrazole (CAS 3994-50-1)
- 1-Methyl-4-nitro-1H-pyrazole, radical ion(1-) (CAS 82208-47-7)
- 1-Methyl-5-nitro-1h-pyrazole (CAS 54210-33-2)
- 4-methyl-1-nitro-1H-pyrazole (CAS 38858-82-1)
- 5-Methyl-2-nitro-1H-imidazole (CAS 5213-35-4)
Recommended Standards
- 3-Methyl-4-nitropyrazole (CAS 5334-39-4)
- 3-Methylisoxazole-5-carboxylic Acid (CAS 4857-42-5)
- 3-Methyl-2-nitrofuran (CAS 38829-39-9)
- 4-Amino-1,2,5-oxadiazole-3-carboximidamide (CAS 742637-33-8)
- 5-Chloro-4-methylnicotinic acid (CAS 890092-41-8)
- Ethyl 2-[2-(2-phenylacetyl)hydrazino]nicotinate (CAS 1353504-68-3)
- 2-(4-(Difluoromethyl)pyridin-2-yl)acetic acid (CAS 1781339-64-7)
- Ethyl 6,7-difluoro-4-hydroxyquinoline-3-carboxylate (CAS 111760-35-1)
- Methyl 2-(4-bromo-3,5-dimethyl-1h-pyrazol-1-yl)acetate (CAS 1173045-46-9)
- Ethyl 1-(2,2-difluoroethyl)-3-nitro-1H-pyrazole-5-carboxylate (CAS 1384856-19-2)
- 1000575-95-0 2-[2-(4-Bromophenyl)hydrazono]-2-chloro-N,N-dimethylacetamide MFCD09877866 (CAS 1000575-95-0)
- Methyl 6-benzyl-2-(furan-2-carboxamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate hydrochloride (CAS 1215802-58-6)
- 3-amino-5-cyclopropyl-5-methylimidazolidine-2,4-dione (CAS 98432-33-8)
- D-Ile12-Tirzepatide (CAS CATO-CPTD788921)
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