2-Phenyl-4-(phenylthio)isoindoline-1,3-dione CAS 58045-34-4
| CAS No. | 58045-34-4 |
| Molecular Formula | C20H13NO2S |
| Molecular Weight | 331.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Phenyl-4-(phenylthio)isoindoline-1,3-dione (CAS 58045-34-4), molecular formula C20H13NO2S and molecular weight 331.39 g/mol, is a CATO reference standard with documented purity and traceability.
2-Phenyl-4-(phenylthio)isoindoline-1,3-dione (C20H13NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H13NO2S |
| Molecular Weight | 331.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Phenyl Standards
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- 3-((Phenylthio)methyl)-2,3-dihydro-5H-thiazolo[2,3-b]quinazolin-5-one (CAS 477855-77-9)
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- 2-(Phenylthio)pyridine (CAS 3111-54-4)
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Recommended Standards
- 2-{4-[(2H-1,3-benzodioxol-5-yl)methyl]piperazin-1-yl}-1,3-thiazole-5-carbaldehyde (CAS 866040-49-5)
- 3-(2-Methyl-5-phenylbenzo[d]oxazol-3-ium-3-yl)propane-1-sulfonate (CAS 66142-15-2)
- 2-(Toluene-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic acid (CAS 36842-73-6)
- 3-[(1,2,3,4-tetrahydronaphthalen-1-ylamino)sulfonyl]benzoic acid (CAS 731797-76-5)
- (4S,5R)-4,5-Dihydroxy-3-((E)-prop-1-en-1-yl)cyclopent-2-enone (CAS 582-46-7)
- N-((1-(2-Aminoacetyl)piperidin-2-yl)methyl)-N-cyclopropylacetamide (CAS 1353981-89-1)
- 5-Fluoro-2-(pentan-3-ylamino)benzonitrile (CAS 1339928-48-1)
- 1-(2-((2-Methoxyethyl)amino)-2-oxoethyl)piperidine-4-carboxylic acid (CAS 1156269-81-6)
- 1-(Pyridin-4-ylmethyl)-1H-pyrrole-2,5-dione (CAS 46277-44-5)
- 3-Allyl-5,7-dimethylbenzo[d]thiazol-2(3H)-imine hydrobromide (CAS 1949816-46-9)
- 2-(Phenylethynyl)-1,1'-biphenyl (CAS 10271-65-5)
- 2-(Trifluoromethyl)piperidine-4-carboxylic acid (CAS 1552931-38-0)
- (S)-Piperidin-3-ylmethanamine (CAS 174073-64-4)
- Tirzepatide Impurity 17 (CAS CATO-C4X-324017)
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