2-(5-Chlorothiophen-2-yl)oxirane CAS 73099-67-9
| CAS No. | 73099-67-9 |
| Molecular Formula | C6H5ClOS |
| Molecular Weight | 160.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(5-Chlorothiophen-2-yl)oxirane (CAS 73099-67-9), molecular formula C6H5ClOS and molecular weight 160.62 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2-(5-Chlorothiophen-2-yl)oxirane is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C6H5ClOS |
| Molecular Weight | 160.62 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 Chlorothiophen Standards
- 2-(4-Chlorothiophen-2-yl)acetaldehyde (CAS 1499659-20-9)
- 1-(2-Chlorothiophen-3-yl)ethan-1-one (CAS 81557-66-6)
- 1-(4-Chlorothiophen-3-yl)ethanone (CAS 91387-31-4)
- 2-(5-Chlorothiophen-2-yl)acetaldehyde (CAS 853918-99-7)
- (S)-1-(5-chlorothiophen-3-yl)ethan-1-amine (CAS 1213175-82-6)
- (1S)-1-(5-Chlorothiophen-2-yl)ethan-1-amine (CAS 303070-26-0)
- (R)-1-(5-Chlorothiophen-2-yl)ethan-1-amine (CAS 303070-27-1)
- 2-(4-Chlorothiophen-2-yl)ethanamine (CAS 929707-39-1)
Recommended Standards
- 2-Acetyl-3-chlorothiophene (CAS 89581-82-8)
- 2-((Chloromethyl)thio)pyrimidine (CAS 19834-93-6)
- 2-Amino-5-chloropyridine-4-thiol (CAS 2055759-46-9)
- 2-Chloro-1-(thiophen-2-yl)ethan-1-one (CAS 29683-77-0)
- 2-(3-Ethoxycarbonyl-phenyl)-pyrrolidine-1-carboxylic acid tert-butyl ester (CAS 1373223-31-4)
- (2-Fluorophenyl)(3-(methylamino)piperidin-1-yl)methanone hydrochloride (CAS 1833248-09-1)
- 4-Chloro-3-(2,2,2-trifluoroethoxy)aniline (CAS 1342115-81-4)
- 5-Methoxy-2-(2,2,2-trifluoroethoxy)benzoic acid (CAS 175205-34-2)
- Tert-butyl (s)-3-(2-amino-5-fluorophenoxy)pyrrolidine-1-carboxylate (CAS 1332712-37-4)
- 1-(4-((2,4-Dimethylpiperazin-1-yl)methyl)piperidin-1-yl)-2-methoxyethan-1-one (CAS 1421461-53-1)
- (2-(Aminomethyl)pyrrolidin-1-yl)(4-fluoro-3-methylphenyl)methanone hydrochloride (CAS 1826420-83-0)
- rel-(1R,2R)-2-Fluorocyclohexanol (CAS 14365-32-3)
- 3COS3X3N4P 516-12-1 N-Iodosuccinimide 1-Iodopyrrolidine-2,5-dione 2,5-Pyrrolidinedione, 1-iodo- (9CI) Succinimide, N-iodo- 5-21-09-00544 (Beilstein Handbook Reference) BRN 0113917 EINECS 208-221-6 Succiniodimide UNII-3COS3X3N4P (CAS 516-12-1)
- Semaglutide Impurity 8 (CAS CATO-C4X-22268)
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