3-methoxy-1-methyl-4-nitro-pyrazole CAS 1201935-85-4
| CAS No. | 1201935-85-4 |
| Molecular Formula | C5H7N3O3 |
| Molecular Weight | 157.13 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.
CATO supplies 3-methoxy-1-methyl-4-nitro-pyrazole (CAS 1201935-85-4), a certified reference material (molecular formula C5H7N3O3, MW 157.13 g/mol) for analytical method development and quality control.
Structurally, 3-methoxy-1-methyl-4-nitro-pyrazole (C5H7N3O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 157.13 g/mol, it falls into the medium-molecular-weight range. 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).
As a certified reference material (CRM), 3-methoxy-1-methyl-4-nitro-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 | C5H7N3O3 |
| Molecular Weight | 157.13 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 methanol, ethanol, DMSO, water |
| 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.) | 1990 |
| Nitrogen Atoms | 3 |
Related methoxy Standards
- 5-Methoxy-3-methyl-4-nitro-1h-pyrazole (CAS 173682-19-4)
- (2-Methoxy-ethyl)-(2,2,2-trifluoro-ethyl)-amine (CAS 883545-52-6)
- 4-Methoxy-1-methyl-1H-1,2,3-triazole-5-carboxylic acid (CAS 716362-00-4)
- 4-Methoxy-1-methyl-5-nitro-1H-imidazole (CAS 31876-68-3)
- 4-Methoxy-1-methyl-5-nitro-1H-pyrazole (CAS 89717-67-9)
- 2-(3-Methoxy-5-isoxazolyl)acetic Acid (CAS 16877-55-7)
- 3-Methoxy-5-methylisoxazole-4-carboxylic acid (CAS 16877-56-8)
- 3-Methoxy-4-methylisoxazole-5-carboxylic acid (CAS 1780322-20-4)
Recommended Standards
- (1-Methyl-4-nitro-1H-pyrazol-3-yl)methanol (CAS 1201935-82-1)
- 4-(Trifluoromethoxy)butan-1-amine hydrochloride (CAS 1208080-43-6)
- 2-[methyl(2,2,2-trifluoroethyl)amino]ethan-1-ol (CAS 1182782-12-2)
- (1-Methyl-3-nitro-1H-pyrazol-5-yl)methanol (CAS 1227210-46-9)
- 3-(3-Bromophenyl)-3-methylmorpholine (CAS 1398504-27-2)
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- N2,N2,1-Trimethyl-1H-benzo[d]imidazole-2,6-diamine (CAS 462649-03-2)
- 3-(5-Ethyl-1,2,4-oxadiazol-3-yl)morpholine (CAS 1565329-30-7)
- 4-(1,3-Dioxoisoindol-2-yl)butanal (CAS 3598-60-5)
- (2E)-3-{4-[(ethylamino)sulfonyl]phenyl}acrylic acid (CAS 926219-87-6)
- [3-(propan-2-yl)-1,2,4-thiadiazol-5-yl]methanol (CAS 337904-88-8)
- N-(4-chloro-2-fluorophenyl)-2-(1,1-dioxidothiomorpholino)-3-(1H-indol-3-yl)propanamide (CAS 477889-68-2)
- 3-CARBOXY-5-CHLOROANISOLE 3-chloro-5-methoxybenzoic acid 5-CHLORO-M-ANISIC ACID 82477-67-6 AS06305 (CAS 82477-67-6)
- Peptide Impurity 34 (CAS 21282-09-7)
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