5-(5-(Naphthalen-2-yl)oxazol-2-yl)isobenzofuran-1,3-dione CAS 66788-90-7
| CAS No. | 66788-90-7 |
| Molecular Formula | C21H11NO4 |
| Molecular Weight | 341.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 341.32 g/mol gives 5-(5-(Naphthalen-2-yl)oxazol-2-yl)isobenzofuran-1,3-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(5-(Naphthalen-2-yl)oxazol-2-yl)isobenzofuran-1,3-dione (CAS 66788-90-7), molecular formula C21H11NO4 and molecular weight 341.32 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, 5-(5-(Naphthalen-2-yl)oxazol-2-yl)isobenzofuran-1,3-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 341.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures 5-(5-(Naphthalen-2-yl)oxazol-2-yl)isobenzofuran-1,3-dione 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 | C21H11NO4 |
| Molecular Weight | 341.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related Naphthalen Standards
- 5-(5-(Naphthalen-1-yl)oxazol-2-yl)isobenzofuran-1,3-dione (CAS 66788-89-4)
- N-(Naphthalen-2-yl)-2,3-dihydrobenzo[b][1,4]dioxine-6-sulfonamide (CAS 315693-33-5)
- 5-((Naphthalen-1-yloxy)methyl)-4-((tetrahydrofuran-2-yl)methyl)-4H-1,2,4-triazole-3-thiol (CAS 917746-44-2)
- N-(Naphthalen-1-ylmethyl)-1,9-dioxa-4-azaspiro[5.5]undecane-4-carboxamide (CAS 1421474-44-3)
- 3-Methyl-7-((naphthalen-1-ylmethyl)thio)-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-4-one (CAS 869074-79-3)
- 2-Methyl-4-(naphthalen-2-yl)-4-oxobutanoic acid (CAS 16206-42-1)
- 4-(Naphthalen-1-yl)-2-sulfanylidene-1H,2H,3H,4H,5H-indeno[1,2-d]pyrimidin-5-one (CAS 865659-28-5)
- 2-((4-Methyl-5-((naphthalen-1-ylamino)methyl)-4H-1,2,4-triazol-3-yl)thio)acetohydrazide (CAS 1071351-43-3)
Recommended Standards
- 5-(5-Fluoro-2-hydroxybenzoyl)-2-oxo-1-(1,3-thiazol-2-yl)-1,2-dihydropyridine-3-carbonitrile (CAS 743444-72-6)
- 4-Bromo-5-methyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole (CAS 2158298-26-9)
- 5-(Benzo[d][1,3]dioxol-5-yl)-3-(((2-methoxyphenyl)amino)methyl)-1,3,4-oxadiazol-2(3H)-one (CAS 73484-48-7)
- 4-(Bromomethyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole (CAS 2173991-89-2)
- N-(2,6-Diisopropylphenyl)oleamide (CAS 140112-65-8)
- (S)-1-tert-Butyl 4-(1-phenylethyl) 5,6-dihydropyridine-1,4(2H)-dicarboxylate (CAS 2070009-65-1)
- (1R*,4R*)-N1-(Cyclopentylmethyl)cyclohexane-1,4-diamine dihydrochloride (CAS 1286273-68-4)
- Ethyl 4-aminotetrahydro-2H-pyran-4-carboxylate (CAS 246547-26-2)
- 6-Methylpyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione (CAS 2499-96-9)
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- Dexamethasone impurity 90 (CAS 134429-31-5)
- cis-Cyclopropane-1,2-dicarbohydrazide (CAS 2374-08-5)
- tert-Butyl 3-formyl-4-methylpiperidine-1-carboxylate (CAS 1201187-01-0)
- Tirzepatide (CAS 2023788-19-2)
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