N-((1-Cyclopentyl-3-methyl-1H-pyrazol-4-yl)methyl)-1-ethyl-3-methyl-1H-pyrazol-5-amine hydrochloride CAS 1856095-66-3
| CAS No. | 1856095-66-3 |
| Molecular Formula | C16H25N5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of N-((1-Cyclopentyl-3-methyl-1H-pyrazol-4-yl)methyl)-1-ethyl-3-methyl-1H-pyrazol-5-amine hydrochloride (C16H25N5HCl) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
N-((1-Cyclopentyl-3-methyl-1H-pyrazol-4-yl)methyl)-1-ethyl-3-methyl-1H-pyrazol-5-amine hydrochloride (CAS 1856095-66-3) is a high-purity analytical reference standard with the molecular formula C16H25N5HCl and a molecular weight of 323.87 g/mol.
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.
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 | C16H25N5 HCl |
| Molecular Weight | 323.87 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related N Standards
- 6-cyclopentyl-5-nitropiperidin-2-one (CAS 1000345-72-1)
- Ethyl 1-cyclopentyl-1H-pyrazole-3-carboxylate (CAS 1002535-19-4)
- N-cyclopentyl-4,6-dimethylpyrimidin-2-amine (CAS 1004259-91-9)
- methyl 1-cyclopentyl-1h-pyraZole-3-carboxylate (CAS 1006319-34-1)
- 1-Cyclopentyl-3-methyl-1h-pyrazole-4-carbaldehyde (CAS 1006333-49-8)
- 1-Cyclopentyl-5-methyl-1H-pyrazol-3-amine (CAS 1006334-12-8)
- 1-Cyclopentyl-1h-pyrazole-5-carboxylic acid (CAS 1006334-24-2)
- 1-Cyclopentyl-1h-pyrazole-3-carboxylic acid (CAS 1006348-93-1)
Recommended Standards
- 2-Chloro-N-(2-((2-methoxy-5-methylphenyl)amino)-2-oxoethyl)acetamide (CAS 749920-76-1)
- Indolin-1-yl(5-methylthiophen-2-yl)methanone (CAS 923770-60-9)
- 4,4,4-Trifluoro-N'-hydroxybutanimidamide (CAS 1344881-15-7)
- 2,6-Dimethoxy-5-methylpyrimidin-4(1H)-one (CAS 52280-99-6)
- 2-(Chloromethyl)-4-cyano-3-(difluoromethyl)-6-iodopyridine (CAS 1807096-20-3)
- 2-((4-Methoxybenzyl)thio)-5-((4-nitrobenzyl)thio)-1,3,4-thiadiazole (CAS 618432-18-1)
- 6-Methoxy-4-methylbenzo[d]thiazole (CAS 1190310-57-6)
- N~1~-Benzyl-N~1~-ethyl-4-methyl-1,2-benzenediamine (CAS 1097811-16-9)
- 3,5-Dibromo-2-fluoro-6-iodobenzoic acid (CAS 1160573-45-4)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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