2-Chloro-1-(5-methylfuran-2-yl)ethan-1-one CAS 81805-55-2
| CAS No. | 81805-55-2 |
| Molecular Formula | C7H7ClO2 |
| Molecular Weight | 158.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 158.58 g/mol gives 2-Chloro-1-(5-methylfuran-2-yl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Chloro-1-(5-methylfuran-2-yl)ethan-1-one (CAS 81805-55-2), molecular formula C7H7ClO2 and molecular weight 158.58 g/mol, is a CATO reference standard with documented purity and traceability.
2-Chloro-1-(5-methylfuran-2-yl)ethan-1-one (C7H7ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2-Chloro-1-(5-methylfuran-2-yl)ethan-1-one 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 | C7H7ClO2 |
| Molecular Weight | 158.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-4-(hydroxymethyl)phenol (CAS 105960-29-0)
- 2-Chloro-1-(furan-2-yl)propan-1-one (CAS 106430-52-8)
- 3-Chloro-2-(hydroxymethyl)phenol (CAS 1094627-55-0)
- 4-Chloro-3-hydroxybenzyl alcohol (CAS 1261598-26-8)
- 2-Chloro-1-(4-methylfuran-2-yl)ethanone (CAS 133674-52-9)
- 2-Chloro-1-(3-methylfuran-2-yl)ethan-1-one (CAS 1502390-71-7)
- 2-Chloro-1-(2-methylfuran-3-yl)ethan-1-one (CAS 1543126-21-1)
- 3-Chloro-4-(hydroxymethyl)phenol (CAS 171569-42-9)
Recommended Standards
- 2,5-Dimethyl-3-furoyl Chloride (CAS 50990-93-7)
- 2-Chloro-3-(hydroxymethyl)phenol (CAS 277331-17-6)
- 3-Chloro-6-methyl-1,2-benzenediol (CAS 19337-62-3)
- 2-Chloro-3-methoxyphenol (CAS 72232-49-6)
- Ethyl 5-acetamido-4-cyano-3-methylthiophene-2-carboxylate (CAS 23903-49-3)
- 5-(2-Methoxyethoxy)picolinic acid (CAS 1262860-54-7)
- cis-1-Bromo-2-Fluoro-Cyclohexane (CAS 51422-74-3)
- (3S,4S)-4-methylpyrrolidine-3-carboxylic acid (CAS 1279049-38-5)
- Mometasone Related Compound 4 (CAS 37413-91-5)
- Ethyl 2-chloro-3-methoxybenzoate (CAS 1261743-55-8)
- 5-(3-Aminothieno[2,3-b]pyridin-2-yl)-4-(o-tolyl)-4H-1,2,4-triazole-3-thiol (CAS 1114597-28-2)
- Dibenzo[b,d]thiophen-3-ol (CAS 69747-77-9)
- 4-Methyl-5-(thiophen-2-yl)-1H-pyrazol-3-amine hydrochloride (CAS 1239692-57-9)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
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