(S)-2-Chloro-4-methylvaleric Acid CAS 28659-81-6
| CAS No. | 28659-81-6 |
| Molecular Formula | C6H11ClO2 |
| Molecular Weight | 150.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (S)-2-Chloro-4-methylvaleric 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.
CATO supplies (S)-2-Chloro-4-methylvaleric Acid (CAS 28659-81-6), a certified reference material (molecular formula C6H11ClO2, MW 150.60 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, (S)-2-Chloro-4-methylvaleric Acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C6H11ClO2 |
| Molecular Weight | 150.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
Related S Standards
- 1-Chloro-4-ethynyl-2-methylbenzene (CAS 1204394-34-2)
- 2-Chloro-1-ethynyl-3-methylbenzene (CAS 1233501-73-9)
- 2-Chloro-1-ethynyl-4-methylbenzene (CAS 1233520-92-7)
- (2S)-2-chloro-3-methylpentanoic acid (CAS 1237830-70-4)
- 1-Chloro-2-(prop-2-yn-1-yl)benzene (CAS 1312713-20-4)
- 2-Chloro-4-ethynyl-1-methylbenzene (CAS 1338235-62-3)
- 1-Chloro-3-ethynyl-2-methylbenzene (CAS 1342063-35-7)
- 4-Chloro-2-methylbutyric acid methyl ester (CAS 13888-03-4)
Recommended Standards
- (2S,3S)-2-Chloro-3-methylvaleric Acid (CAS 32653-34-2)
- 1-Chloro-2-ethynyl-3-methylbenzene (CAS 2228993-04-0)
- 1-Chloro-3-ethynyl-5-methylbenzene (CAS 1936635-62-9)
- 1-Chloro-3-(prop-2-yn-1-yl)benzene (CAS 944903-30-4)
- (E)-3-(2-Methylthiazol-4-yl)acrylic acid (CAS 201142-75-8)
- 4'-Fluoro-3-methoxy-1,1'-biphenyl (CAS 10540-43-9)
- (S)-2-(3-((1H-Indol-3-yl)methyl)-4-(tert-butoxycarbonyl)-2-oxopiperazin-1-yl)acetic acid (CAS 1260594-11-3)
- 2-Methyl-4-(1-naphthylmethoxy)aniline (CAS 946664-30-8)
- 5-(2,4-Difluorophenyl)nicotinonitrile (CAS 1346691-68-6)
- N1-Benzylbenzene-1,4-diamine (CAS 17272-83-2)
- 2'-Butoxy-2,6-Diamino-3,5'-Azopyridine (CAS 617-19-6)
- 2-(1-Methylcyclopropyl)pyrimidin-5-ol (CAS 78104-95-7)
- 3-((Methylsulfonyl)methyl)-1H-pyrazole hydrochloride (CAS 1956365-21-1)
- Des-Ser39-Tirzepatide (CAS CATO-CPTD788936)
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