1-[5-(2-nitrophenyl)thiophen-2-yl]ethan-1-one CAS 70013-40-0
| CAS No. | 70013-40-0 |
| Molecular Formula | C12H9NO3S |
| Molecular Weight | 247.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-[5-(2-nitrophenyl)thiophen-2-yl]ethan-1-one (CAS 70013-40-0), molecular formula C12H9NO3S and molecular weight 247.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H9NO3S, 1-[5-(2-nitrophenyl)thiophen-2-yl]ethan-1-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 1-[5-(2-nitrophenyl)thiophen-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 | C12H9NO3S |
| Molecular Weight | 247.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 1-(Cyclopropylmethyl)-4-(4-fluorophenyl)-3-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860784-97-0)
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- 1-(Cyclopropylmethyl)-4-(2-fluorophenyl)-3-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860789-05-5)
- 2-(2,3-Dihydrobenzofuran-5-yl)thiazole-4-carboxylic acid (CAS 368869-97-0)
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- [Tyr52, Asn76] Parathyroid Hormone (52-84), human (CAS 89492-47-7)
- 3-(2-Hydroxyethyl)-6,7-dimethoxyquinazoline-2,4(1H,3H)-dione (CAS 110231-25-9)
- 2-Methyl-2-(pyridin-2-yl)propan-1-ol (CAS 34995-30-7)
- 4-((3-Chlorophenyl)thio)pentan-2-one (CAS 1342752-62-8)
- Vonoprazan Impurity 134 (CAS 52334-53-9)
- 3-bromo-2,2-dimethyloxetane (CAS 2167729-75-9)
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