Sulfo-cyanine7 NHS ester, 90% CAS 477908-53-5
| CAS No. | 477908-53-5 |
| Molecular Formula | C39H45N3O10S2 |
| Molecular Weight | 779.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Sulfo-cyanine7 NHS ester, 90% (CAS 477908-53-5), molecular formula C39H45N3O10S2 and molecular weight 779.92 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Sulfo-cyanine7 NHS ester, 90% (C39H45N3O10S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 19.0, corresponding to approximately 19 ring(s) or double-bond equivalent(s). With a molecular weight of 779.92 g/mol, it falls into the high-molecular-weight range. 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.
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 | C39H45N3O10S2 |
| Molecular Weight | 779.92 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.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Sulfo Standards
- Sulfo-Cy5 amine (CAS 2183440-44-8)
- Sulfo DBCO-PEG4-Maleimide (CAS 2055198-07-5)
- Sulfo-Cy5-N3 (CAS 1481447-40-8)
- Sulfo-cyanine3 azide (sodium) (CAS 2055138-89-9)
- Sulfo Rhodamine Methanethiosulfonate (CAS 386229-71-6)
- Sulfo-cyanine7 carboxylic acid, 90% (CAS 943298-08-6)
- 4,4'-(4,4'-(5-Sulfo-1,3-phenylenedisulfonyl)bis(4,1-phenylenesulfonyl))dibenzenesulfonic acid (CAS 923979-87-7)
- Sulfo DBCO-PEG4-amine (CAS 2055198-05-3)
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- 5-Methylpyridin-3-aminehydrochloride (CAS 957065-90-6)
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Why CATO?
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