5-(4-Methoxyphenyl)thiophene-2-carboxylic acid CAS 116016-56-9
| CAS No. | 116016-56-9 |
| Molecular Formula | C12H10O3S |
| Molecular Weight | 234.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(4-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 116016-56-9) is a high-purity analytical reference standard with the molecular formula C12H10O3S and a molecular weight of 234.27 g/mol.
Structurally, 5-(4-Methoxyphenyl)thiophene-2-carboxylic acid (C12H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 234.27 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 5-(4-Methoxyphenyl)thiophene-2-carboxylic acid 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 | C12H10O3S |
| Molecular Weight | 234.27 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
- 4-(3-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 1267168-68-2)
- 3-(2-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 666841-74-3)
- 3-(3-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 944257-85-6)
- 3-(4-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 91368-67-1)
- 4-(4-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 82437-74-9)
- 5-(3-Methoxyphenyl)thiophene-2-carboxylic acid (CAS 229467-25-8)
- 6-(2-Methoxyphenyl)-2-thioxo-2,3-dihydropyrimidin-4(1{H})-one (CAS 886140-11-0)
- 6-(3-Methoxyphenyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 33166-84-6)
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