ethyl 4-chloro-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylate CAS 2044872-34-4
| CAS No. | 2044872-34-4 |
| Molecular Formula | C13H13ClO2 |
| Molecular Weight | 236.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including ethyl 4-chloro-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylate.
ethyl 4-chloro-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylate (CAS 2044872-34-4) is a high-purity analytical reference standard with the molecular formula C13H13ClO2 and a molecular weight of 236.69 g/mol.
Based on its molecular formula C13H13ClO2, ethyl 4-chloro-1H,1aH,6H,6aH-cyclopropa[a]indene-1-carboxylate contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 236.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C13H13ClO2 |
| Molecular Weight | 236.69 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 | Cl-containing |
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- 4-Phenylindoline (CAS 179473-53-1)
- 2-(4-Nitrophenyl)benzofuran (CAS 787-64-4)
- 1-Chloro-6,7-dimethoxyphthalazine (CAS 70724-23-1)
- N-Methyl-N-(4-piperidinylmethyl)-1-butanaminedihydrochloride (CAS 1220030-15-8)
- Folic Acid Impurity 54 (CAS CATO-C4X-139554)
- Fmoc-Lys(biotinyl-ε-aminocaproyl)-OH (CAS 160158-05-4)
- (-)-N-((2,5-Dichloro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl)carbamoyl)-2,6-difluorobenzamide (CAS 130841-26-8)
- 2-Chloro-N-(3-cyanophenyl)propanamide (CAS 565179-44-4)
- Neuropeptide W-23 (rat) (CAS 383415-89-2)
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