(R)-3-(Fmoc-amino)-4-(tert-butoxy)butanoic Acid CAS 203854-51-7
| CAS No. | 203854-51-7 |
| Molecular Formula | C23H27NO5 |
| Molecular Weight | 397.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 397.46 g/mol gives (R)-3-(Fmoc-amino)-4-(tert-butoxy)butanoic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(R)-3-(Fmoc-amino)-4-(tert-butoxy)butanoic Acid (CAS 203854-51-7) is a high-purity analytical reference standard with the molecular formula C23H27NO5 and a molecular weight of 397.46 g/mol.
Structurally, (R)-3-(Fmoc-amino)-4-(tert-butoxy)butanoic Acid (C23H27NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 397.46 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.
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.
As a certified reference material (CRM), (R)-3-(Fmoc-amino)-4-(tert-butoxy)butanoic Acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C23H27NO5 |
| Molecular Weight | 397.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 1 |
Related R Standards
- Fmoc-Thr-OBu-t (CAS 120791-76-6)
- Fmoc-Sta(3S,4S)-OH (CAS 158257-40-0)
- Fmoc-(3S,4S,5S)-4-amino-3-hydroxy-5-methylheptanoic Acid (CAS 215190-17-3)
- Fmoc-α-methyl-D-Serine(OtBu) (CAS 914399-96-5)
- Fmoc-Thr(tBu)-OH (CAS 71989-35-0)
- Fmoc-allo-Thr(tBu)-OH (CAS 201481-37-0)
- Fmoc-Asp(OtBu)-ol (CAS 133565-45-4)
- Fmoc-D-allo-Thr(tBu)-OH (CAS 170643-02-4)
Recommended Standards
- (R)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(tert-butoxymethyl)propanoic acid (CAS 847153-42-8)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(isopentyloxy)propanoic acid (CAS 2255321-11-8)
- (11-Bromoundecyl)triethoxysilane (CAS 200138-14-3)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(tert-butoxy)-2-methylpropanoic acid (CAS 914399-98-7)
- 4-(Piperazin-1-yl)pyridine-2-carbonitrile (CAS 1341792-17-3)
- 3-Methylpentanethioamide (CAS 1248329-25-0)
- 2-Methoxy-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)acetamide (CAS 1285530-33-7)
- (S)-2-Amino-5,5,5-trifluoro-4,4-dimethylpentanoic acid (CAS 2095886-40-9)
- N-[4-[(Aminoiminomethyl)amino]phenyl]methanesulfonamide (CAS 677752-76-0)
- (4-(Iodomethyl)phenyl)trimethoxysilane (CAS 83594-96-1)
- N-(2-hydroxyethyl)-3-methylbenzamide (CAS 778623-19-1)
- Linagliptin Impurity 59 (CAS 551-93-9)
- Ceftizoxime Impurity 15 (CAS 54639-48-4)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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