2-((tert-Butoxycarbonyl)amino)-3-(3,3-difluorocyclobutyl)propanoic acid CAS 681128-43-8
| CAS No. | 681128-43-8 |
| Molecular Formula | C12H19F2NO4 |
| Molecular Weight | 279.28 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.
2-((tert-Butoxycarbonyl)amino)-3-(3,3-difluorocyclobutyl)propanoic acid (CAS 681128-43-8), molecular formula C12H19F2NO4 and molecular weight 279.28 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H19F2NO4, 2-((tert-Butoxycarbonyl)amino)-3-(3,3-difluorocyclobutyl)propanoic acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C12H19F2NO4 |
| Molecular Weight | 279.28 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related tert Standards
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Recommended Standards
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- 2-(((3,4-Difluorophenyl)amino)methyl)-6-ethoxyphenol (CAS 416861-67-1)
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- 4-Methyl-2-((trimethylsilyl)methyl)pyridine (CAS 158588-02-4)
- 4-(2-methoxyethyl)-5-methyl-thiophene-2-sulfonyl chloride (CAS 1158211-23-4)
- (9H-Fluoren-9-yl)methyl3-aminopyrrolidine-1-carboxylatehydrochloride (CAS 811841-92-6)
- Isothiazolo[5,4-b]quinolin-3-amine (CAS 69513-37-7)
- 5-((4-Chlorophenyl)thio)-N-(4-fluorophenyl)-1,2,3-thiadiazole-4-carboxamide (CAS 338791-89-2)
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- Lithium 2-carboxyphenolate hydrate (CAS 75575-50-7)
- 3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4-[[(9R)-10,11-dihydrocinchonan-9-yl]amino]-3-cyclobutene-1,2-dione (CAS 1407166-64-6)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
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