N-(Azido-PEG3)-N-Fluorescein-PEG3-acid CAS 2100306-50-9
| CAS No. | 2100306-50-9 |
| Molecular Formula | C38H45N5O13S |
| Molecular Weight | 811.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 811.85 g/mol gives N-(Azido-PEG3)-N-Fluorescein-PEG3-acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N-(Azido-PEG3)-N-Fluorescein-PEG3-acid (CAS 2100306-50-9) is a high-purity analytical reference standard with the molecular formula C38H45N5O13S and a molecular weight of 811.85 g/mol.
N-(Azido-PEG3)-N-Fluorescein-PEG3-acid (C38H45N5O13S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C38H45N5O13S |
| Molecular Weight | 811.85 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 |
| Sulfur Atoms | 1 |
Related N Standards
- N-(Azido-PEG3)-N-bis(PEG4-Boc) (CAS 2353409-58-0)
- 2-[N2-(4-Azido-2,3,5,6-tetrafluorobenzoyl)-N6-(6-biotinamidocaproyl)-L-lysinyl]ethyl Methanethiosulfonate (CAS 1356383-18-0)
- N-(Azido-PEG2)-N-bis(PEG4-Boc) (CAS 2112731-81-2)
- Azido-PEG4-Amido-tri-(t-butoxycarbonylethoxymethyl)-methane (CAS 1421933-29-0)
- Azido-PEG3-Val-Cit-PAB-PNP (CAS 2055047-18-0)
- N-(Azido-PEG2)-N-Fluorescein-PEG3-acid (CAS 2086689-04-3)
- N-(Azido-PEG3)-N-Fluorescein-PEG4-acid (CAS 2100306-72-5)
- N-(Azido-PEG4)-N-bis(PEG4-acid) (CAS 2093152-80-6)
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