3-Oxo-3-(phenylthio)propanoic acid CAS 4279-77-0
| CAS No. | 4279-77-0 |
| Molecular Formula | C9H8O3S |
| Molecular Weight | 196.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Oxo-3-(phenylthio)propanoic acid (C9H8O3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
3-Oxo-3-(phenylthio)propanoic acid (CAS 4279-77-0), molecular formula C9H8O3S and molecular weight 196.22 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Oxo-3-(phenylthio)propanoic 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 | C9H8O3S |
| Molecular Weight | 196.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Oxo Standards
- 4-(Phenylthio)butanoic acid (CAS 17742-51-7)
- 2-Methyl-2-(phenylthio)propanoic acid (CAS 5219-64-7)
- Ethyl 2-(phenylthio)acetate (CAS 7605-25-6)
- Methyl 2-(phenylthio)propanoate (CAS 21673-18-7)
- 3-Methyl-1-(phenylthio)butan-2-amine (CAS 1526302-81-7)
- 5-(Phenylthio)pentan-1-amine (CAS 642092-78-2)
- N-(2-(phenylthio)ethyl)propan-2-amine (CAS 67747-26-6)
- N-(2-(Phenylthio)ethyl)acetamide (CAS 2014-72-4)
Recommended Standards
- 3-Fluorophenanthrene (CAS 440-40-4)
- 4-(2-Fluoropyridin-3-yl)piperidin-4-ol (CAS 360766-60-5)
- 3-FLuoro-alpha,alpha-dimethyl-benzeneacetic acid, methyl ester (CAS 476429-16-0)
- 4-(3-Fluoro-4-methoxyphenyl)-1-buten-4-ol (CAS 842123-81-3)
- 1-(3,4-Dimethoxyphenyl)-3-(thiophen-2-yl)urea (CAS 902936-86-1)
- 6,7-Dimethylquinoline-2-carboxylic acid (CAS 1092305-30-0)
- 4-Chloro-7-ethyl-7H-imidazo[4,5-c]pyridazine (CAS 1268521-56-7)
- (1-Benzylcyclobutyl)methanamine hydrochloride (CAS 1384264-61-2)
- Fmoc-2-amino-5-phenyl(2,3-Difluoro)-L-pentanoic acid (CAS 2349313-65-9)
- (3-Iodophenyl)(4-methylpyridin-3-yl)methanone (CAS 1187166-56-8)
- N'-(2-Hydroxybenzylidene)isonicotinohydrazide (CAS 495-84-1)
- 2-(Chloromethyl)pyrazine (CAS 39204-47-2)
- 6-Chloro-3-iodo-4-pyridazinecarboxylic acid (CAS 2241239-39-2)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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