5-(Mercaptomethyl)furan-2-carboxylic acid CAS 88511-94-8
| CAS No. | 88511-94-8 |
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 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-(Mercaptomethyl)furan-2-carboxylic acid (CAS 88511-94-8) is a high-purity analytical reference standard with the molecular formula C6H6O3S and a molecular weight of 158.18 g/mol.
Structurally, 5-(Mercaptomethyl)furan-2-carboxylic acid (C6H6O3S) 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 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 158.18 g/mol, it falls into the medium-molecular-weight range. 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 | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Ciclesonide Impurity 10 (CAS CATO-C4X-320110)
- (4-Bromophenyl)(2-isopropylphenyl)methanol (CAS 1443313-07-2)
- Methyl thieno[2,3-b]thiophene-2-carboxylate (CAS 20969-37-3)
- furan-2-carbonyl azide (CAS 20762-98-5)
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- Insulin Degludec Impurity 6 (CAS CATO-C4X-21576)
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