Ethyl 2-amino-2-methyl-4-(5-methyl-1h-pyrazol-1-yl)butanoate CAS 1340145-90-5
| CAS No. | 1340145-90-5 |
| Molecular Formula | C11H19N3O2 |
| Molecular Weight | 225.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-amino-2-methyl-4-(5-methyl-1h-pyrazol-1-yl)butanoate (CAS 1340145-90-5) is a high-purity analytical reference standard with the molecular formula C11H19N3O2 and a molecular weight of 225.29 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Ethyl 2-amino-2-methyl-4-(5-methyl-1h-pyrazol-1-yl)butanoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 225.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H19N3O2 |
| Molecular Weight | 225.29 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- Ethyl 2-(ethylamino)-3-(5-methyl-1h-pyrazol-1-yl)propanoate (CAS 1339690-07-1)
- Ethyl 2-amino-4-(4,5-dimethyl-1h-imidazol-1-yl)butanoate (CAS 1340328-29-1)
- Ethyl 4-(3-methyl-1h-pyrazol-1-yl)-2-(methylamino)butanoate (CAS 1339659-10-7)
- Methyl 2-amino-4-(3,4,5-trimethyl-1h-pyrazol-1-yl)butanoate (CAS 1340345-87-0)
- 5-Chloro-3-(morpholinosulfonyl)thiophene-2-carboxylic acid (CAS 948015-50-7)
- Buturon (CAS 3766-60-7)
- 5-((4-Methoxyphenoxy)methyl)-4-methyl-4h-1,2,4-triazole-3-thiol (CAS 485339-93-3)
- 2-Amino-2-(2-bromo-4-chlorophenyl)ethan-1-ol (CAS 1273663-48-1)
- 2-Amino-N-[2-(cyclopropyl-methyl-amino)-cyclohexyl]-acetamide (CAS 1401668-52-7)
- Voriconazole Impurity 75 (CAS 321588-94-7)
- Berberine Impurity 32 (CAS 33542-90-4(free base))
- N-[(1R,2S,5R)-2-[(S)-3-[[7-(tert-Butyl)pyrazolo[1,5-a][1,3,5]triazin-4-yl]amino]-2-oxo-1-pyrrolidinyl]-5-(tert-butylamino)cyclohexyl]acetamide (CAS 1286279-29-5)
- 4-((4,5-Dihydro-1H-imidazol-2-yl)(hydroxy)methyl)benzene-1,2-diol (CAS 91401-71-7)
- Neuropeptide Y (2-36) (human, rat) trifluoroacetate salt (CAS 123139-39-9)
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