Fmoc-Lys(Me)2-OH · HCl CAS 252049-10-8
| CAS No. | 252049-10-8 |
| Molecular Formula | C23H28N2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 432.94 g/mol gives Fmoc-Lys(Me)2-OH · HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Fmoc-Lys(Me)2-OH · HCl (CAS 252049-10-8), a certified reference material (molecular formula C23H28N2O4HCl, MW 432.94 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Fmoc-Lys(Me)2-OH · HCl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 432.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C23H28N2O4 HCl |
| Molecular Weight | 432.94 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Fmoc Standards
- Fmoc-Ser(tBu)-Ser(Psi(Me,Me)pro)-OH (CAS 1000164-43-1)
- Fmoc-Gly-Gly-Gly-Gly-OH (CAS 1001202-16-9)
- N-Fmoc-2,5-difluoro-L-phenylalanine (CAS 1004959-90-3)
- Fmoc-DL-Phe-OH (CAS 100750-05-8)
- Fmoc-D-Homocys(Trt)-OH (CAS 1007840-62-1)
- Fmoc-Glu(OtBu)-OSu (CAS 101214-22-6)
- Fmoc-Glu(OtBu)-Glu(OtBu)-OH (CAS 101214-23-7)
- Fmoc-Phe-OSu (CAS 101214-43-1)
Recommended Standards
- 4-Cyano-3-methylpyridine (CAS 7584-05-6)
- 2-Ethoxy-6-methylpyrimidin-4-ol (CAS 55996-04-8)
- 4-(4-Ethyl-5-((3-methylbenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 585559-70-2)
- Tetrakis(acetoxymercuri)methane, min. 95% (CAS 25201-30-3)
- 2,3-Dimethyl-1,3-benzothiazol-3-ium tetrafluoroborate (CAS 21786-62-9)
- 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11-Icosafluorododecane-1,12-diol (CAS 183162-43-8)
- 4-((4-(Diethylamino)benzylidene)amino)-3-(2-methoxyphenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478257-09-9)
- Cyazofamid-dessulfonamide-carboxylic Acid (CAS 1287189-46-1)
- 2-(Furan-3-yl)-1-propylpiperidine (CAS 1355177-62-6)
- Semaglutide (CAS 910463-68-2（free base）)
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