N-Butyl-3-(2,4-dichlorophenyl)-N-ethyl-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine CAS 202579-59-7
| CAS No. | 202579-59-7 |
| Molecular Formula | C20H24Cl2N4 |
| Molecular Weight | 391.34 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.
N-Butyl-3-(2,4-dichlorophenyl)-N-ethyl-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 202579-59-7) is a high-purity analytical reference standard with the molecular formula C20H24Cl2N4 and a molecular weight of 391.34 g/mol.
Structurally, N-Butyl-3-(2,4-dichlorophenyl)-N-ethyl-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine (C20H24Cl2N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 391.34 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H24Cl2N4 |
| Molecular Weight | 391.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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- (1-(2-(Trifluoromethyl)phenyl)ethyl)hydrazine (CAS 1016502-10-5)
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