Isatin Bis-cresol CAS 47465-97-4
| CAS No. | 47465-97-4 |
| Molecular Formula | C22H19NO3 |
| Molecular Weight | 345.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Isatin Bis-cresol (CAS 47465-97-4) is a high-purity analytical reference standard with the molecular formula C22H19NO3 and a molecular weight of 345.39 g/mol.
Isatin Bis-cresol (C22H19NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
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 | C22H19NO3 |
| Molecular Weight | 345.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1970 |
| Nitrogen Atoms | 1 |
Related Isatin Standards
- Isatin-β-thiosemicarbazone (CAS 27830-79-1)
- Isatin-3-oxime (CAS 607-28-3)
- Isatin (CAS 91-56-5)
- Isatin-5-sulfonic Acid Monosodium Salt Monohydrate (CAS 303137-11-3)
- 80789-74-8 Isatin-5-sulfonic acid 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, sodium salt 1H-Indole-5-sulfonic acid, 2,3-dihydro-2,3-dioxo-, monosodium salt 5-Indolinesulfonic acid, 2,3-dioxo- Isatin-5-sulfonic acid sodium salt Sodium 5-sulfoisatin Sodium 5-isatinsulfonate (CAS 80789-74-8)
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