5(6)-Carboxy-tetramethylrhodamine CAS 98181-63-6
| CAS No. | 98181-63-6 |
| Molecular Formula | C25H22N2O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 860.92 g/mol gives 5(6)-Carboxy-tetramethylrhodamine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5(6)-Carboxy-tetramethylrhodamine (CAS 98181-63-6), molecular formula C25H22N2O5C25H22N2O5 and molecular weight 860.92 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5(6)-Carboxy-tetramethylrhodamine (C25H22N2O5C25H22N2O5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 31.0, corresponding to approximately 31 ring(s) or double-bond equivalent(s). With a molecular weight of 860.92 g/mol, it falls into the high-molecular-weight range. 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), 5(6)-Carboxy-tetramethylrhodamine 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 | C25H22N2O5 C25H22N2O5 |
| Molecular Weight | 860.92 g/mol |
| Purity | >95% |
| 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) | 31.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |
Related Carboxy Standards
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- N-((1H-pyrazol-1-yl)methyl)-N-phenylaniline (CAS 301171-02-8)
- 2-Methylbenzothiazole-6-boronic acid pinacol ester, 97% (CAS 837392-69-5)
- 4-Methoxy-2-nitronaphtho[2,1-b]furan (CAS 75965-72-9)
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