(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)butanoic acid CAS 219967-69-8
| CAS No. | 219967-69-8 |
| Molecular Formula | C29H31NO5 |
| Molecular Weight | 473.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)butanoic acid (CAS 219967-69-8), molecular formula C29H31NO5 and molecular weight 473.56 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)butanoic acid (C29H31NO5) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)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 | C29H31NO5 |
| Molecular Weight | 473.56 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(4-(tert-butoxy)benzyl)propanoic acid (CAS 671233-55-9)
- Ethyl 2-(Boc-amino)-3-[4-(benzyloxy)phenyl]-3-phenylacrylate (CAS 2006281-57-6)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(4-(tert-butoxy)phenyl)butanoic acid (CAS 2446043-05-4)
- Fmoc-L-HTyr(tBu)-OH (CAS 204384-69-0)
- 4-Amino-1-benzylpyrrolidin-3-ol (CAS 819080-07-4)
- D.E.R.(R) 736 pract. (CAS 9072-62-2)
- 4-Isopropyl-2-phenyl-2,4,5,6-tetrahydropyrrolo[2,3-c]pyrazol-3-ol (CAS 1708428-50-5)
- Benzo[c][1,2,5]oxadiazole-5-carbonitrile (CAS 54286-62-3)
- Clotrimazole Impurity 9 (CAS 23593-68-2)
- 1,3-Dimethoxy-2-(methylthio)benzene (CAS 33617-67-3)
- 3-(4-Bromo-2-fluorophenyl)-2-chloro-1-propene (CAS 951894-13-6)
- Aprepitant Impurity 69 (CAS 178616-88-1)
- 5-(3-Chloro-4-isopropoxyphenyl)-1,3,4-thiadiazol-2-amine (CAS 1258440-61-7)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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