3H-Indol-3-one, 5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- CAS 84-40-2
| CAS No. | 84-40-2 |
| Molecular Formula | C16H8Br2N2O2 |
| Molecular Weight | 420.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 420.05 g/mol gives 3H-Indol-3-one, 5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3H-Indol-3-one, 5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (CAS 84-40-2) is a high-purity analytical reference standard with the molecular formula C16H8Br2N2O2 and a molecular weight of 420.05 g/mol.
Structurally, 3H-Indol-3-one, 5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (C16H8Br2N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 420.05 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H8Br2N2O2 |
| Molecular Weight | 420.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related H Standards
- 3-{[2-(1H-indol-3-yl)-2-phenylethyl]sulfamoyl}benzoic acid (CAS 877966-22-8)
- 1-(1H-Indol-3-yl)-2-(triphenylphosphoranylidene)ethanone (CAS 91543-07-6)
- 1-(2-(1H-indol-3-yl)ethyl)-5-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)pyrimidin-4(1H)-one (CAS 551930-80-4)
- 1-(1H-Indol-3-yl)-2-phenyl-2-((1-(o-tolyl)-1H-tetrazol-5-yl)thio)ethan-1-one (CAS 742116-60-5)
- 1-(2-(1H-indol-3-yl)ethyl)-3-(2,4-dichlorobenzyl)-4-hydroxypyridin-2(1H)-one (CAS 478045-90-8)
- 1-(2-(1H-indol-3-yl)ethyl)-3-(2,6-dichlorobenzyl)-2-methylpyridin-4(1H)-one (CAS 860785-21-3)
- 6-(2-(4-(1H-Indol-3-yl)piperidin-1-yl)ethyl)-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 79449-97-1)
- 11-(1H-indol-3-yl)-3,3-dimethyl-1-oxo-2,3,4,5,10,11-hexahydro-1H-dibenzo[b,e][1,4]diazepine-7-carboxylic acid (CAS 1024355-02-9)
Recommended Standards
- 6,6'-Dibromo-[2,2'-biindolinylidene]-3,3'-dione (CAS 19201-53-7)
- Perfluoro-4-methyl-3,6-dioxaoctane (CAS 95842-03-8)
- (E)-6,6'-Dibromo-[3,3'-biindolinylidene]-2,2'-dione (CAS 1351240-72-6)
- Hydrocortisone Impurity 70 (CAS 116816-20-7)
- tert-Butyl(S)-(2-fluoro-3-hydroxypropyl)carbamate (CAS 344413-84-9)
- Cyclohexyl carbamate (CAS 1124-54-5)
- (S)-3'-Bromo-4'H,6'H-spiro[piperidine-4,5'-pyrrolo[1,2-b]pyrazol]-4'-amine (CAS 2843690-95-7)
- Ophiopogonanone B (CAS 1316759-83-7)
- (R)-N,1-Dimethylpiperidin-3-amine (CAS 1354007-31-0)
- N'-(3-benzylquinoxalin-2-yl)-3-(trifluoromethyl)benzenesulfonohydrazide (CAS 477889-31-9)
- (R)-2-Amino-3-(3-hydroxy-4-methylisoxazol-5-yl)propanoic acid hydrate (CAS 210049-09-5)
- 4-(4-Chlorophenoxymethyl)benzoic acid (CAS 88382-48-3)
- (4-Butylphenyl)methanamine (CAS 57802-79-6)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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