Sulforhodamine G CAS 5873-16-5
| CAS No. | 5873-16-5 |
| Molecular Formula | C25H25N2O7S2 |
| 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 552.59 g/mol gives Sulforhodamine G distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Sulforhodamine G (CAS 5873-16-5), a certified reference material (molecular formula C25H25N2O7S2Na, MW 552.59 g/mol) for analytical method development and quality control.
Structurally, Sulforhodamine G (C25H25N2O7S2Na) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.5, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 552.59 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Sulforhodamine G 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 | C25H25N2O7S2 Na |
| Molecular Weight | 552.59 g/mol |
| Purity | Technical Grade |
| 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) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Sulforhodamine Standards
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- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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