(R)-2-Hydroxy-4-(methylthio)butanoic acid CAS 39638-34-1
| CAS No. | 39638-34-1 |
| Molecular Formula | C5H10O3S |
| Molecular Weight | 150.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (R)-2-Hydroxy-4-(methylthio)butanoic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(R)-2-Hydroxy-4-(methylthio)butanoic acid (CAS 39638-34-1), molecular formula C5H10O3S and molecular weight 150.20 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, (R)-2-Hydroxy-4-(methylthio)butanoic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (R)-2-Hydroxy-4-(methylthio)butanoic acid 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 | C5H10O3S |
| Molecular Weight | 150.20 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.) | 1968 |
| Sulfur Atoms | 1 |
Related R Standards
- (2S)-2-Hydroxy-4-(methylthio)butanoic Acid (CAS 48042-96-2)
- 3-Hydroxy-1lambda6-thiane-1,1-dione (CAS 94158-05-1)
- 3-Hydroxy-3-methyltetrahydrothiophene 1,1-dioxide (CAS 873-81-4)
- Methyl 2-hydroxy-3-(methylthio)propanoate (CAS 54864-75-4)
- 2-Hydroxy-4-(methylthio)butyric Acid (65-72% in Water) (CAS 583-91-5)
- N-Hydroxy-4-methylbenzimidamide (CAS 19227-13-5)
- 4-Hydroxy-2-methyl-6-(cyclopropyl)pyrimidine (CAS 7043-05-2)
- N'-Hydroxy-2-phenylacetimidamide (CAS 261735-00-6)
Recommended Standards
- [(4-aminophenyl)sulfanyl]formonitrile (CAS 2987-46-4)
- (2S)-1-pyrrolidinesulfonamide (CAS 4108-88-7)
- 1-(2-Thienyl)-2,3-butadien-1-one (CAS 54971-76-5)
- (2R)-5-Methoxy-1,3-oxathiolane-2-methanol (CAS 528567-32-0)
- 4-{[(4-chlorophenyl)methyl]sulfanyl}-2-{[(3,4-dichlorophenyl)methyl]sulfanyl}-5-methoxypyrimidine (CAS 339276-01-6)
- 6-(3-Cyanophenyl)-6-oxohexanenitrile (CAS 898767-62-9)
- 4-(Naphthalene-2-sulfonamido)butanoic acid (CAS 179051-17-3)
- 3-Amino-2,4-diisopropylbenzonitrile (CAS 2142576-78-9)
- (2r)-5-Hexyl-4-hydroxy-2-undecyl-2,3-dihydropyran-6-one (CAS 112764-00-8)
- Fluvastatin Sodium Salt (CAS 93957-55-2)
- 1-Methyl-3-(1-methyl-1h-pyrazol-4-yl)-1h-pyrazole-4-carboxylic acid (CAS 1249019-47-3)
- 1H-Pyrido[3,2-d][1,3]oxazine-2,4-dione (CAS 63016-85-3)
- 1-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)azepan-4-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 2137578-44-8)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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