Azido-PEG24-NHS ester CAS 2375600-46-5
| CAS No. | 2375600-46-5 |
| Molecular Formula | C55H104N4O28 |
| Molecular Weight | 1269.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 1269.42 g/mol gives Azido-PEG24-NHS ester distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Azido-PEG24-NHS ester (CAS 2375600-46-5), molecular formula C55H104N4O28 and molecular weight 1269.42 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Azido-PEG24-NHS ester is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1269.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Azido-PEG24-NHS ester 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 | C55H104N4O28 |
| Molecular Weight | 1269.42 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 4 |
Related Azido Standards
- Azido-PEG24-acid (CAS 2195075-62-6)
- Azido-PEG4-Val-Cit-PAB-MMAE (CAS 1869126-64-6)
- Azido-PEG24-alcohol (CAS 2415674-94-9)
- Azido-PEG23-amine (CAS 2172677-19-7)
- N-(Azido-PEG4)-N-bis(PEG4-NHS ester) (CAS 2353409-90-0)
- N-(Azido-PEG4)-N-bis (PEG4-NHS ester)(97%) (CAS 2182601-77-8)
- Azido-PEG20-alcohol (CAS 1637297-21-2)
- Azido-PEG35-amine (CAS 2301851-71-6)
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