N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(pent-4-ynoyl)-L-lysine CAS 1159531-18-6
| CAS No. | 1159531-18-6 |
| Molecular Formula | C26H28N2O5 |
| Molecular Weight | 448.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 448.51 g/mol gives N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(pent-4-ynoyl)-L-lysine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(pent-4-ynoyl)-L-lysine (CAS 1159531-18-6), molecular formula C26H28N2O5 and molecular weight 448.51 g/mol, is a CATO reference standard with documented purity and traceability.
N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N6-(pent-4-ynoyl)-L-lysine (C26H28N2O5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C26H28N2O5 |
| Molecular Weight | 448.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 3-(2-(4-(4-Fluorophenyl)piperazin-1-yl)-2-oxoethyl)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 1105235-10-6)
- Z-Pro-Leu-Ala-NHOH (N-1285.0250) (CAS 123984-00-9)
- 2,5,8,11,13,16,19,22-Octaoxa-1,12(1,3)-dibenzenacyclodocosaphane (CAS 106376-99-2)
- 4-Benzyl 1-(tert-butyl) 2-(3-phenyl-2-propynoyl)-1,4-piperazinedicarboxylate (CAS 1353506-88-3)
- 3-(2,3-Dihydrobenzofuran-4-yl)acrylic acid (CAS 209257-37-4)
- 3-Bromo-5-chloro-2-methoxyaniline hydrochloride (CAS 1820674-87-0)
- Doxycycline5-sulfosalicylate (CAS 60683-15-0)
- 5,5-Difluoro-2-methylpiperidine hydrochloride (CAS 1780950-86-8)
- tert-butyl 1-fluoro-3-hydroxy-cyclobutanecarboxylate (CAS 2231676-35-8)
- (2-Hydroxy-5-methylphenyl)(phenyl)methanone (CAS 1470-57-1)
- 1-Benzyl 1,2-di-tert-butyl hydrazine-1,1,2-tricarboxylate (CAS 202980-91-4)
- (S)-2-Amino-N-((S)-1-benzyl-pyrrolidin-2-ylmethyl)-N-cyclopropyl-propionamide (CAS 1354007-43-4)
- Ethyl 6-Methylquinoline-3-carboxylate (CAS 1239775-53-1)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com