tert-butyl (2R)-2-(2-chloroacetamido)-3-methylbutanoate CAS 1909288-46-5
| CAS No. | 1909288-46-5 |
| Molecular Formula | C11H20ClNO3 |
| Molecular Weight | 249.73 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.
CATO supplies tert-butyl (2R)-2-(2-chloroacetamido)-3-methylbutanoate (CAS 1909288-46-5), a certified reference material (molecular formula C11H20ClNO3, MW 249.73 g/mol) for analytical method development and quality control.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, tert-butyl (2R)-2-(2-chloroacetamido)-3-methylbutanoate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 249.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H20ClNO3 |
| Molecular Weight | 249.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- tert-Butyl 2-(chloromethyl)-2-(hydroxymethyl)pyrrolidine-1-carboxylate (CAS 1415564-60-1)
- tert-butyl (2S)-2-(2-chloroacetamido)-3-methylbutanoate (CAS 1909295-01-7)
- Boc-val-chloromethylketone (CAS 103542-47-8)
- Brivaracetam Impurity 207 (CAS CATO-C4X-2007207)
- 2-Amino-1-(4-ethynylphenyl)ethan-1-one (CAS 2229292-26-4)
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Why CATO?
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