Fmoc-PEG4-Ala-Ala-Asn-PAB CAS 2055048-57-0
| CAS No. | 2055048-57-0 |
| Molecular Formula | C43H55N5O13 |
| Molecular Weight | 849.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Fmoc-PEG4-Ala-Ala-Asn-PAB (CAS 2055048-57-0), molecular formula C43H55N5O13 and molecular weight 849.92 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C43H55N5O13, Fmoc-PEG4-Ala-Ala-Asn-PAB 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 849.92 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Fmoc-PEG4-Ala-Ala-Asn-PAB 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 | C43H55N5O13 |
| Molecular Weight | 849.92 g/mol |
| 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 5 |
Related Fmoc Standards
- FMoc-ala-ala-asn(trt)-pab (CAS 1834515-99-9)
- Fmoc-Arg(Pmc)-OPfp (B-1695.0001) (CAS 136013-81-5)
- Fmoc-Lys (biotin-PEG4)-OH (CAS 1334172-64-3)
- Fmoc-NH-PEG12-CH2CH2COOH (CAS 1952360-91-6)
- 3-[FMOC-amino-dodeca(ethylÂeneoxyÂ)]-propionic acid (CAS 756526-01-9)
- Fmoc-Cys(Trt)-Cys(Psi(Dmp,H)pro)-OH (CAS 2022956-75-6)
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- Fmoc-3-benzoyl-1-triphenylmethyl-erythro-sphingosine (CAS 676485-57-7)
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- 2,4,5-trimethoxyÂÂphenylÂalanine (CAS 23358-63-6)
- 2-(2,5-Dichlorophenyl)pyrimidine (CAS 1361773-28-5)
- (R)-1-amino-1-(3-fluoro-4-(trifluoromethyl)phenyl)-2-methylpropan-2-ol (CAS 2222681-45-8)
- Taurine Impurity 5 (CAS CATO-C4X-31185)
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Why CATO?
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