3-Hydroxy-3-methylbutanoic acid CAS 197384-98-8
| CAS No. | 197384-98-8 |
| Molecular Formula | C7H4ClF5OS |
| Molecular Weight | 266.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Hydroxy-3-methylbutanoic acid.
3-Hydroxy-3-methylbutanoic acid (CAS 197384-98-8) is a high-purity analytical reference standard with the molecular formula C7H4ClF5OS and a molecular weight of 266.62 g/mol.
The molecular framework of 3-Hydroxy-3-methylbutanoic acid (C7H4ClF5OS) is characterized by sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H4ClF5OS |
| Molecular Weight | 266.62 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2013 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
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