4-(Methylsulfanyl)butanoic acid CAS 32391-97-2
| CAS No. | 32391-97-2 |
| Molecular Formula | C5H10O2S |
| Molecular Weight | 134.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Methylsulfanyl)butanoic acid (CAS 32391-97-2), molecular formula C5H10O2S and molecular weight 134.20 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-(Methylsulfanyl)butanoic acid (C5H10O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.
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 | C5H10O2S |
| Molecular Weight | 134.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1966 |
| Sulfur Atoms | 1 |
Related Methylsulfanyl Standards
- 3-(Methylsulfanyl)butanoic acid (CAS 16630-65-2)
- [2-(methylsulfanyl)ethyl]urea (CAS 6950-55-6)
- 2-(Methylsulfanyl)butanoic acid (CAS 874525-90-3)
- 2-Methyl-2-(methylsulfanyl)propanoic acid (CAS 27868-56-0)
- 5-Methylsulfanyl-1H-[1,2,4]triazol-3-ylamine 3-amino-5-methylthio-1,2,4-triazole 5-(methylthio)-1h-1,2,4-triazol-3-amine 3-amino-5-methylthio-1h-1,2,4-triazole 3-amino-5-(methylmercapto)-1h-1,2,4-triazole 5-methylsulfanyl-1 h-[1,2,4]triazol-3-ylamine 3-amino-5-(methylthio)-1h-1,2,4-triazole 45534-08-5 (CAS 45534-08-5)
- (2S)-4-(methylsulfanyl)butane-1,2-diamine (CAS 68013-51-4)
- 5-(Methylsulfanyl)pentan-1-ol (CAS 57774-99-9)
- Methyl[1-(methylsulfanyl)butan-2-yl]amine (CAS 1247695-60-8)
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- (6S)-4-Methoxybenzyl 3-(chloromethyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (CAS 1214081-14-7)
- Allyl trifluoromethanesulfonate (CAS 41029-45-2)
- 2,2-Difluoropropane-1-sulfonyl chloride (CAS 1779953-86-4)
- (2-Cyclobutylpyrimidin-5-yl)boronic acid (CAS 1551413-91-2)
- 3-(1-Ethyl-2-phenyl-1H-indol-3-yl)-3-oxo-propionitrile (CAS 729561-84-6)
- Acetyl-Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 2022956-56-3)
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