5-Hydroxy-3-methylpentanoic acid CAS 151-11-1
| CAS No. | 151-11-1 |
| Molecular Formula | C6H12O3 |
| Molecular Weight | 132.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5-Hydroxy-3-methylpentanoic acid (C6H12O3) is characterized by 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.
5-Hydroxy-3-methylpentanoic acid (CAS 151-11-1), molecular formula C6H12O3 and molecular weight 132.16 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 5-Hydroxy-3-methylpentanoic 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.
Physical & Chemical Properties
| Molecular Formula | C6H12O3 |
| Molecular Weight | 132.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
Related Hydroxy Standards
- n'-Hydroxy-2-(propan-2-yloxy)ethanimidamide (CAS 1016754-49-6)
- 5-Hydroxy-4-methylpentanoic acid (CAS 105025-31-8)
- n'-Hydroxy-4-methoxybutanimidamide (CAS 1312601-25-4)
- N'-Hydroxy-2-methoxy-2-methylpropanimidamide (CAS 1354968-72-1)
- 3-Hydroxy-3-methylpentanoic acid (CAS 150-96-9)
- Methyl 2-hydroxy-3-methylbutanoate (CAS 17417-00-4)
- 4-Hydroxy-2,2-dimethylbutanoic acid (CAS 187935-22-4)
- (2S)-2-Hydroxy-3-methylpentanoic acid (CAS 204119-59-5)
Recommended Standards
- 2-Ethoxy-2-methylpropionic Acid (CAS 15001-71-5)
- Indolizin-7-amine (CAS 1516540-80-9)
- 1,4-Dihydrocinnoline (CAS 1500-42-1)
- 2-(1,4-dioxan-2-yl)ethanol (CAS 151720-04-6)
- N-(2-Bromophenyl)-2,2,2-trifluoroacetamide (CAS 2727-71-1)
- PAHs-d Mix 5 (CAS CATO-MPAH111534-DI)
- 3-(3-Fluorophenyl)-5-(2-methyl-1,3-dioxolan-2-yl)benzo[c]isoxazole (CAS 383147-30-6)
- 2-(((8-Hydroxyquinolin-7-yl)(phenyl)methyl)amino)benzoic acid (CAS 5394-35-4)
- Cefcapene Impurity 12 Dihydrochloride (CAS 3025716-46-2（free base）)
- (2S,5S)-1-tert-Butyl 2-methyl 5-hydroxypiperidine-1,2-dicarboxylate (CAS 915976-32-8)
- 8-(Tert-butyl)-2-azaspiro[4.5]decane-4-carboxylic acid (CAS 1467023-30-8)
- 6-Chloro-N-((tetrahydrofuran-2-yl)methyl)nicotinamide (CAS 603095-69-8)
- 4-(4-Chloro-3-methoxyphenyl)piperidine hydrochloride (CAS 2168546-59-4)
- Tirzepatide Impurity 36 (CAS CATO-C4X-324036)
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