5-Amino-1,4-dimethyl-1H-pyrazole CAS 3524-49-0
| CAS No. | 3524-49-0 |
| Molecular Formula | C5H9N3 |
| Molecular Weight | 111.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Amino-1,4-dimethyl-1H-pyrazole (CAS 3524-49-0), molecular formula C5H9N3 and molecular weight 111.15 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Amino-1,4-dimethyl-1H-pyrazole (C5H9N3) is characterized by a nitrile group. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C5H9N3 |
| Molecular Weight | 111.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Amino Standards
- 2-Amino-4,5-dimethylimidazole (CAS 13805-21-5)
- 2-amino-1H-pyrrole-3-carbonitrile (CAS 755753-61-8)
- 3-Amino-1,5-dimethylpyrazole (CAS 35100-92-6)
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Recommended Standards
- 5-(Aminomethyl)-1-methylpyrazole (CAS 863548-52-1)
- 4-Propyl-4H-1,2,4-triazole (CAS 27104-95-6)
- 5-Isopropyl-1H-1,2,4-triazole (CAS 23161-10-6)
- 4-ethyl-3-methyl-4H-1,2,4-triazole (CAS 59781-02-1)
- 3-Chloro-2-fluoro-5-(trifluoromethyl)benzylamine (CAS 261763-07-9)
- Methyl N-((tert-butoxycarbonyl)glycyl)-N-methylglycinate (CAS 174311-10-5)
- 4-Chloro-[1,2,4]triazolo[4,3-a]quinoxalin-1-amine (CAS 494206-13-2)
- Methyl 2-Methyl-2-phenylpropanoate (CAS 57625-74-8)
- 4-(Dimethylamino)phthalazin-1(2H)-one (CAS 1190019-89-6)
- (βS)-β-[(1,1-tert-Butyloxycarbonyl)amino]-4-benzyloxy-benzenepropanoic Acid Methyl Ester (CAS 832089-66-4)
- 7-Methylisoquinolin-3-amine (CAS 2090755-95-4)
- Sofosbuvir Impurity 107 (CAS CATO-C4X-1052107)
- 2-{[(2,6-dichlorophenyl)methyl]sulfanyl}-N-methyl-6-[(phenylsulfanyl)methyl]pyrimidin-4-amine (CAS 341965-39-7)
- Lixisenatide (CAS 320367-13-3（free base）)
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