4-(4-Oxo-3-phenethylthiazolidin-2-yl)benzoic acid CAS 592473-77-3
| CAS No. | 592473-77-3 |
| Molecular Formula | C18H17NO3S |
| Molecular Weight | 327.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-Oxo-3-phenethylthiazolidin-2-yl)benzoic acid (CAS 592473-77-3), molecular formula C18H17NO3S and molecular weight 327.40 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-(4-Oxo-3-phenethylthiazolidin-2-yl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 327.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H17NO3S |
| Molecular Weight | 327.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-(4-Methoxyphenyl)-5-(4-methylphenoxymethyl)-4h-1,2,4-triazole-3-thiol (CAS 69026-68-2)
- 4-(Benzo[d][1,3]dioxol-5-ylmethyl)-N,N-dimethylpiperazine-1-sulfonamide (CAS 349540-46-1)
- 4-(4-Methoxyphenyl)-5-((m-tolyloxy)methyl)-4H-1,2,4-triazole-3-thiol (CAS 328556-79-2)
- 4-[4-(Benzenesulfonyl)piperazin-1-yl]benzonitrile (CAS 478046-73-0)
- Methyl 2-(1,3-dioxoisoindolin-2-yl)-4-(methylthio)butanoate (CAS 55985-04-1)
- tert-Butyl 2-(3-ethoxy-3-oxopropanoyl)pyrrolidine-1-carboxylate (CAS 108310-01-6)
- 1-[2-(4-aminopyrimidin-2-yl)-3,4-dihydro-1H-isoquinolin-5-yl]-5-methyl-triazole-4-carboxylic acid (CAS 1334203-50-7)
- N-[(5-Chloro-2-hydroxyphenyl)phenylmethylene]-L-valine (CAS 38075-43-3)
- 2-Amino-4-(3,4-diethoxyphenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile (CAS 315246-14-1)
- Ethyl 2,3-dimethoxybenzoate (CAS 91971-58-3)
- N-(1-Methyl-1H-pyrrol-3-yl)acetamide (CAS 62187-86-4)
- (S)-9a-(4-chlorophenyl)-8-phenyl-9,9a-dihydropyrido[1,2-a]indole-6,10-dione (CAS 2368851-99-2)
- 4-Benzoyl-3-methyl-1-{[4-(trifluoromethyl)phenyl]methyl}-1,2,3,4-tetrahydroquinoxalin-2-one (CAS 317822-15-4)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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