5-bromo-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylic acid CAS 2060034-66-2
| CAS No. | 2060034-66-2 |
| Molecular Formula | C11H9BrO2 |
| Molecular Weight | 253.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-bromo-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-bromo-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylic acid (CAS 2060034-66-2), a certified reference material (molecular formula C11H9BrO2, MW 253.09 g/mol) for analytical method development and quality control.
Structurally, 5-bromo-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylic acid (C11H9BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 253.09 g/mol, it falls into the medium-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.
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.
As a certified reference material (CRM), 5-bromo-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C11H9BrO2 |
| Molecular Weight | 253.09 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Br-containing |
Related bromo Standards
- 1-Bromo-2-fluoro-4-(methylsulfonyl)benzene (CAS 1032825-02-7)
- 2-Bromo-4-fluoro-1-(methylsulfonyl)benzene (CAS 1039744-23-4)
- 2-Bromo-1-(5-methyl-1-benzofuran-2-yl)ethan-1-one (CAS 1178862-94-6)
- 1-Bromo-3-fluoro-5-(methylsulfonyl)benzene (CAS 1207970-78-2)
- 2-Bromo-1-(2-methylbenzofuran-3-yl)ethanone (CAS 124617-51-2)
- 5-Bromo-7-ethyl-2-formyl-benzofuran (CAS 137206-73-6)
- 1-Bromo-3-fluoromethanesulfonylbenzene (CAS 1394022-50-4)
- 2-((2-Bromo-2-methylpropanoyl)oxy)-2-methylpropanoic acid (CAS 1431509-30-6)
Recommended Standards
- 5-Amino-1-(3,4-dichlorophenyl)-1H-pyrazole-4-carbonitrile (CAS 58791-78-9)
- 7-(Bromomethyl)-4-methyl-2H-chromen-2-one (CAS 53878-05-0)
- 5-Amino-1-(2,6-dichlorophenyl)-1H-pyrazole-4-carbonitrile (CAS 792953-01-6)
- 9-Chloro-5-(chloromethyl)-[1,2,4]triazolo[1,5-c]quinazoline (CAS 61164-88-3)
- Ethyl 2-(2-carbamimidamido-1,3-thiazol-4-yl)-acetate hydrochloride (CAS 1272756-56-5)
- 5-chloro-1-propyl-1H-1,3-benzodiazole-2-carbaldehyde (CAS 1253395-07-1)
- (3-Chloro-2-Fluorophenyl)(2,4-dimethoxyphenyl)methanone (CAS 680610-70-2)
- Ergotamine Tartrate EP Impurity A (CAS 72170-28-6)
- 1-Benzylpiperidine-4-carboxamide (CAS 62992-68-1)
- 4-((6-Amino-1-(4-fluorophenyl)-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-1,2-phenylene diacetate (CAS 176379-13-8)
- 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 1339647-15-2)
- tert-Butyl ((1-((S)-2-aminopropanoyl)piperidin-2-yl)methyl)(cyclopropyl)carbamate (CAS 1354028-60-6)
- 1-Methyl-1H-imidazole-4-sulfonyl chloride (CAS 137049-00-4)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
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