81142-52-1 Tetrachrome Stain (MacNeal) CAS 81142-52-1
| CAS No. | 81142-52-1 |
| Molecular Formula | C20H24Br4O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 81142-52-1 Tetrachrome Stain (MacNeal) (C20H24Br4O5C16H31N3SC14H27N3SClNa) is characterized by a salt form, a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
81142-52-1 Tetrachrome Stain (MacNeal) (CAS 81142-52-1) is a high-purity analytical reference standard with the molecular formula C20H24Br4O5C16H31N3SC14H27N3SClNa and a molecular weight of 1289.42 g/mol.
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), 81142-52-1 Tetrachrome Stain (MacNeal) 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 | C20H24Br4O5 C16H31N3S C14H27N3S 2*Cl 2*Na |
| Molecular Weight | 1289.42 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) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
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