4-Chloro-1H-indene-1,3(2H)-dione CAS 20926-88-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20926-88-9 |
| Molecular Formula | C9H5ClO2 |
| Molecular Weight | 180.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-1H-indene-1,3(2H)-dione (CAS 20926-88-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H5ClO2. Molecular weight: 180.59 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H5ClO2 |
| Molecular Weight | 180.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 4-chloro-1H-1,6-naphthyridin-2-one (CAS 2503202-03-5)
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- 4-Chloro-1,8-naphthyridin-2(1H)-one (CAS 59514-93-1)
- Nα-acetyl-5-methoxy-D-tryptophan (CAS 1029430-13-4)
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- N-(3-Chlorophenyl)-2-mercaptoacetamide (CAS 35331-31-8)
- Teneligliptin impurity 35 (CAS CATO-C4X-176035)
- 2-Methoxy-5-(N-((4-methoxytetrahydro-2H-thiopyran-4-yl)methyl)sulfamoyl)benzamide (CAS 2034487-06-2)
- 3-[4-(trifluoromethoxy)phenyl]piperazin-2-one (CAS 1246548-45-7)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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