2-Chloro-1-(5-ethylthiophen-2-yl)ethan-1-one CAS 72612-03-4
| CAS No. | 72612-03-4 |
| Molecular Formula | C8H9ClOS |
| Molecular Weight | 188.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 188.67 g/mol gives 2-Chloro-1-(5-ethylthiophen-2-yl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Chloro-1-(5-ethylthiophen-2-yl)ethan-1-one (CAS 72612-03-4), molecular formula C8H9ClOS and molecular weight 188.67 g/mol, is a CATO reference standard with documented purity and traceability.
2-Chloro-1-(5-ethylthiophen-2-yl)ethan-1-one (C8H9ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; 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.
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 | C8H9ClOS |
| Molecular Weight | 188.67 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- (5-Chloro-2-methoxy-phenyl)-methanethiol (CAS 1155100-13-2)
- 5-Chloro-2-(methylthio)benzyl alcohol (CAS 120121-38-2)
- 2-Chloro-6-(methylthio)benzenemethanol (CAS 1340127-12-9)
- 3-Chloro-4-ethoxybenzenethiol (CAS 1378801-10-5)
- 1-(4-Chloro-5-ethylthiophen-2-yl)ethan-1-one (CAS 1399661-79-0)
- (2-Chloro-5-methoxyphenyl)(methyl)sulfane (CAS 473255-65-1)
- (3-Chloro-4-(methylthio)phenyl)methanol (CAS 694481-00-0)
- (3-Chloro-4-methoxyphenyl)methanethiol (CAS 63550-21-0)
Recommended Standards
- 2-Chloro-1-(2,5-dimethylthiophen-3-yl)ethan-1-one (CAS 31772-43-7)
- 2-Chloro-1-methoxy-4-(methylthio)benzene (CAS 98490-83-6)
- 1-[(Chloromethyl)sulfanyl]-4-methoxybenzene (CAS 7205-89-2)
- 4-Chloro-1-(thiophen-2-yl)butan-1-one (CAS 43076-59-1)
- Benzyl 2-(2,2,2-trifluoroacetyl)hydrazinecarboxylate (CAS 866478-74-2)
- 4-Benzyl-3,4-dihydro-2H-benzo[b][1,4]oxazin-2-one (CAS 1034767-23-1)
- (1S,3S)-3-fluorocyclopentane-1-carboxylic acid (CAS 2306247-95-8)
- 6-Chloro-2-methylpyridine-3-sulfonyl chloride (CAS 889944-74-5)
- (S)-Bis(2-(2-(2-methoxyethoxy)ethoxy)ethyl) 2-aminosuccinate (CAS 646530-55-4)
- Combivir (CAS 165456-81-5)
- N-methyl-3-nitrobenzamide (CAS 3400-26-8)
- Piperazin-1-yl(tetrahydrofuran-3-yl)methanone (CAS 1070772-28-9)
- N-Benzyl-2-(5-(thiophen-2-yl)isoxazol-3-yl)acetamide (CAS 946227-71-0)
- Rac1 Inhibitor F56, control peptide (CAS 1315378-77-8)
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