rel-(2S,3R)-Methyl 2-chloro-3-methoxybutanoate CAS 26839-90-7
| CAS No. | 26839-90-7 |
| Molecular Formula | C6H11ClO3 |
| Molecular Weight | 166.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of rel-(2S,3R)-Methyl 2-chloro-3-methoxybutanoate is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
rel-(2S,3R)-Methyl 2-chloro-3-methoxybutanoate (CAS 26839-90-7), molecular formula C6H11ClO3 and molecular weight 166.60 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of rel-(2S,3R)-Methyl 2-chloro-3-methoxybutanoate (C6H11ClO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, 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.
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.
CATO manufactures rel-(2S,3R)-Methyl 2-chloro-3-methoxybutanoate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H11ClO3 |
| Molecular Weight | 166.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
Recommended Standards
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- 4-(4-bromophenyl)-1-methyl-1H-imidazol-2-amine (CAS 1260877-71-1)
- 2-(But-3-yn-1-yl)cyclopentan-1-ol (CAS 1410413-87-4)
- Ethyl 3-Chlorobenzoate (CAS 1128-76-3)
- (S)-2-Bromo-3-(tert-butoxy)propanoic acid (CAS 191221-33-7)
- 1-(5-(4-Chlorophenyl)-2-methyl-1-phenyl-1H-pyrrol-3-yl)ethanone (CAS 100989-43-3)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
Why CATO?
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