Fmoc-N-PEG3-CH2-NHS ester CAS 2128735-25-9
| CAS No. | 2128735-25-9 |
| Molecular Formula | C27H30N2O9 |
| Molecular Weight | 526.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Fmoc-N-PEG3-CH2-NHS ester (CAS 2128735-25-9), a certified reference material (molecular formula C27H30N2O9, MW 526.54 g/mol) for analytical method development and quality control.
Based on its molecular formula C27H30N2O9, Fmoc-N-PEG3-CH2-NHS ester contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 526.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C27H30N2O9 |
| Molecular Weight | 526.54 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.) | 1997 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 1,5-Dimethyl-4-(tributylstannyl)-1H-imidazole (CAS 2648450-45-5)
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- Ethyl 3-amino-3-(3,5-dichlorophenyl)propanoate (CAS 147524-80-9)
- D-Phe6-Tirzepatide (CAS CATO-CPTD788925)
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