1H-Indole-2,3-dione, 5-chloro-1-[(3,4-dichlorophenyl)methyl]-, 3-(O-acetyloxime) CAS 303998-55-2
| CAS No. | 303998-55-2 |
| Molecular Formula | C17H11Cl3N2O3 |
| Molecular Weight | 397.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1H-Indole-2,3-dione, 5-chloro-1-[(3,4-dichlorophenyl)methyl]-, 3-(O-acetyloxime) 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.
CATO supplies 1H-Indole-2,3-dione, 5-chloro-1-[(3,4-dichlorophenyl)methyl]-, 3-(O-acetyloxime) (CAS 303998-55-2), a certified reference material (molecular formula C17H11Cl3N2O3, MW 397.64 g/mol) for analytical method development and quality control.
The molecular framework of 1H-Indole-2,3-dione, 5-chloro-1-[(3,4-dichlorophenyl)methyl]-, 3-(O-acetyloxime) (C17H11Cl3N2O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C17H11Cl3N2O3 |
| Molecular Weight | 397.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related H Standards
- 1H-indole, 4-fluoro-3-iodo-1-(phenylsulfonyl)- (CAS 582305-42-8)
- 198560-38-2 1H-Indole-1,2-dicarboxylic acid, 2,3-dihydro-, 1-(9H-fluoren-9-ylmethyl) ester, (2S)- (CAS 198560-38-2)
- 1H-indole, 3-iodo-5-methoxy-1-(phenylsulfonyl)- (CAS 86335-42-4)
- Indole-3-acetyl-L-tryptophan Methyl Ester (CAS 352694-96-3)
- 1H-Indole-1-carboxylic acid, 2-borono-5-[(4-methyl-1-piperazinyl)sulfonyl]-, 1-(1,1-dimethylethyl) ester (CAS 519148-74-4)
- 144625-67-2 1H-Indole-3-carboxylic acid, 5-fluoro-2-methoxy-, (1-(2-((methylsulfonyl)amino)ethyl)-4-piperidinyl)methyl ester GR-125487 GR 125487 (CAS 144625-67-2)
- 1H-Indole-5-carboxamide (CAS 68037-77-4)
- N-(Indole)nitroso Naratriptan (CAS 1216880-64-6)
Recommended Standards
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- [5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-chlorophenyl)carbamate (CAS 343374-61-8)
- 3-Amino-N-(5-oxo-1-(2,4,6-trichlorophenyl)-2,5-dihydro-1H-pyrazol-3-yl)benzamide (CAS 939889-30-2)
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- 3-((4-Cyanophenyl)amino)-3-oxopropanoic acid (CAS 1100767-21-2)
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- 6-Methoxybenzofuran-2-carbonitrile (CAS 35351-48-5)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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