Azido-PEG9-acid CAS 1670249-37-2
| CAS No. | 1670249-37-2 |
| Molecular Formula | C21H41N3O11 |
| Molecular Weight | 511.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Azido-PEG9-acid (CAS 1670249-37-2) is a high-purity analytical reference standard with the molecular formula C21H41N3O11 and a molecular weight of 511.56 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, Azido-PEG9-acid is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 511.56 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.
As a certified reference material (CRM), Azido-PEG9-acid 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 | C21H41N3O11 |
| Molecular Weight | 511.56 g/mol |
| Appearance | White to pale 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 3 |
Related Azido Standards
- Azido-PEG8-C-Boc (CAS 1984776-39-7)
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- Azido-PEG3-Sulfone-PEG4-acid (CAS 2055024-42-3)
- 3-Azido-3-deoxythymidine-5-triphosphate lithium salt - 100mM aqueous solution (CAS 92586-35-1)
- 2-(Azido-PEG2-amido)-1,3-bis-(tert-butyldimethylsilanoxy)propane (CAS 1398044-56-8)
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- Azido-PEG5-PFP ester (CAS 1818294-48-2)
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