2-(3-(4-Bromophenyl)acryloyl)-1H-indene-1,3(2H)-dione CAS 20926-82-3
| CAS No. | 20926-82-3 |
| Molecular Formula | C18H11BrO3 |
| Molecular Weight | 355.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(3-(4-Bromophenyl)acryloyl)-1H-indene-1,3(2H)-dione (CAS 20926-82-3), a certified reference material (molecular formula C18H11BrO3, MW 355.18 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, bromine substitution, 2-(3-(4-Bromophenyl)acryloyl)-1H-indene-1,3(2H)-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 355.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C18H11BrO3 |
| Molecular Weight | 355.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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; 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.) | 1962 |
| Halogen Content | Br-containing |
Related Bromophenyl Standards
- 1-(4-Bromophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264042-91-2)
- 3-(4-Bromophenyl)-5-methoxy-[1,2,4]triazolo[4,3-c]quinazoline (CAS 129177-29-3)
- 4-(((4-Bromophenyl)sulfonyl)methyl)benzoic acid (CAS 110046-40-7)
- 3-[(4-Bromophenyl)sulfonylmethyl]benzoic acid (CAS 142730-37-8)
- 2-((4-Bromophenyl)sulfonamido)benzamide (CAS 333441-46-6)
- 4-((4-(4-Bromophenyl)thiazol-2-yl)amino)-4-oxobutanoic acid (CAS 71591-70-3)
- 4-(4-Bromophenyl)sulfonylbenzohydrazide (CAS 20721-09-9)
- 5-(4-Bromophenyl)-3-(2-ethylidene-1-phenylhydrazinyl)-1H-pyrazole (CAS 143156-66-5)
Recommended Standards
- 2-(2,4-Dichlorophenyl)-7-(furan-2-yl)-[1,2,4]triazolo[1,5-a]pyridine-8-carbonitrile (CAS 866144-70-9)
- 2-(6-Bromonaphthyl)-beta-D-xylopyranoside (CAS 69594-75-8)
- 1-tert-Butyl 5-methyl 3-bromo-1H-indazole-1,5-dicarboxylate (CAS 473416-13-6)
- 6-Bromo-3-((4-fluorophenyl)sulfonyl)-1H-indazole (CAS 651780-37-9)
- 6-Desfluoro-6-methoxy-risperidone, >98% (CAS 1246817-15-1)
- 5-Nitro-3-propoxy-1H-indazole (CAS 1365940-82-4)
- 3-(Trifluoromethyl)-benzenesulfonyl fluoride (CAS 32466-24-3)
- 4-(Propan-2-yl)pyrimidine-5-carboxylic acid (CAS 1147746-76-6)
- 2-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-3-(3,4,5-trimethoxyphenyl)acrylonitrile (CAS 683250-83-1)
- 9H-Indeno[2,1-c]pyridazine (CAS 100595-17-3)
- 7-bromo-2,3-dihydrobenzo[b][1,4]dioxin-5-amine (CAS 16081-47-3)
- tert-Butyl 1,5-dimethyl-1H-pyrazole-4-carboxylate (CAS 1337864-17-1)
- N,N’,N”-Tris(3-aminoquinolino)phosphoric triamide (CAS 2097565-50-7)
- Semaglutide impurity 270 (CAS CATO-C4X-2226270)
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