N-(m-PEG4)-N'-(PEG2-NHS ester)-Cy5 CAS 2107273-28-7
| CAS No. | 2107273-28-7 |
| Molecular Formula | C45H60N3O10 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N-(m-PEG4)-N'-(PEG2-NHS ester)-Cy5 (C45H60N3O10Cl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies N-(m-PEG4)-N'-(PEG2-NHS ester)-Cy5 (CAS 2107273-28-7), a certified reference material (molecular formula C45H60N3O10Cl, MW 838.44 g/mol) for analytical method development and quality control.
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), N-(m-PEG4)-N'-(PEG2-NHS ester)-Cy5 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 | C45H60N3O10 Cl |
| Molecular Weight | 838.44 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3,4-Dichloro-2-nitrobenzoic acid (CAS 13494-59-2)
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- 3-Amino-4-chloro-N-(2-hydroxyethyl)-N-methylbenzenesulfonamide (CAS 1098363-97-3)
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- 4-(Difluoromethyl)-6-methylpyridine-2-sulfonyl chloride (CAS 1804717-74-5)
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- Ethyl 2-(4-(aminomethyl)-3,5-dimethyl-1h-pyrazol-1-yl)acetate (CAS 1155596-41-0)
- 4-(Methylthio)benzenesulfonic acid (CAS 70140-60-2)
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Why CATO?
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