(1-methyl-3-nitro-1H-pyrazol-4-yl)methanol CAS 64182-20-3
| CAS No. | 64182-20-3 |
| Molecular Formula | C5H7N3O3 |
| Molecular Weight | 157.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 157.13 g/mol gives (1-methyl-3-nitro-1H-pyrazol-4-yl)methanol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies (1-methyl-3-nitro-1H-pyrazol-4-yl)methanol (CAS 64182-20-3), a certified reference material (molecular formula C5H7N3O3, MW 157.13 g/mol) for analytical method development and quality control.
(1-methyl-3-nitro-1H-pyrazol-4-yl)methanol (C5H7N3O3) 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).
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 | 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.) | 1975 |
| Nitrogen Atoms | 3 |
Related methyl Standards
- 2-(5-Nitro-1H-pyrazol-1-yl)ethan-1-ol (CAS 1026867-48-0)
- (1-Methyl-4-nitro-1H-pyrazol-3-yl)methanol (CAS 1201935-82-1)
- (1-Methyl-3-nitro-1H-pyrazol-5-yl)methanol (CAS 1227210-46-9)
- (1-Methyl-5-nitro-1H-pyrazol-3-yl)methanol (CAS 1260659-40-2)
- (1-Methyl-2-nitro-1H-imidazol-4-yl)methanol (CAS 50441-07-1)
- (1-Methyl-4-nitro-1H-imidazol-5-yl)methanol (CAS 85012-71-1)
- (1-Methyl-5-nitro-1H-imidazol-4-yl)methanol (CAS 85012-70-0)
- (1-Methyl-5-nitro-1H-pyrazol-4-yl)methanol (CAS 304015-78-9)
Recommended Standards
- ((2-Oxo-2,3-dihydro-1H-imidazol-4-yl)methyl)carbamic acid (CAS 861579-01-3)
- 1-Hydroxy-1-(5-methylisoxazol-3-yl)urea (CAS 188558-87-4)
- 3-Amino-1,1,1-trifluoropentan-2-ol (CAS 182055-66-9)
- (2,5-Dioxoimidazolidin-4-yl)acetamide (CAS 83595-48-6)
- 4-(4-Chlorophenyl)-2-piperidone (CAS 1260770-82-8)
- 1-(5-Fluoro-2-methylphenyl)cyclobutanecarboxylic Acid (CAS 1314663-39-2)
- Methyl 2-(2-amino-4,5-dihydro-1H-imidazol-1-yl)acetate (CAS 775517-90-3)
- 3-(1H-Pyrrol-1-yl)butanoic acid (CAS 94807-08-6)
- 7-Desmethoxy-7-fluoro Elvitegravir (CAS 869893-92-5)
- 4-Isopropoxy-3-methyl-benzylamine (CAS 1183725-82-7)
- Glycyrrhizic Acid Impurity 30 (CAS CATO-C4X-253730)
- Tizanidine Impurity 58 (CAS CATO-C4X-144558)
- Ethyl 2-acetoxy-3-(2-hydroxyphenyl)propanoate (CAS 1799611-05-4)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
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