3-(P-tolyl)benzo[c]isoxazole-5-carbaldehyde CAS 328547-38-2
| CAS No. | 328547-38-2 |
| Molecular Formula | C15H11NO2 |
| Molecular Weight | 237.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(P-tolyl)benzo[c]isoxazole-5-carbaldehyde (CAS 328547-38-2), molecular formula C15H11NO2 and molecular weight 237.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 3-(P-tolyl)benzo[c]isoxazole-5-carbaldehyde is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 237.25 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.
As a certified reference material (CRM), 3-(P-tolyl)benzo[c]isoxazole-5-carbaldehyde 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 | C15H11NO2 |
| Molecular Weight | 237.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related P Standards
- 2-(o-Tolyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 18595-87-4)
- 2-(p-Tolyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 18600-54-9)
- 2-(o-Tolyl)isoindoline-1,3-dione, 97% (CAS 2464-33-7)
- 2-(p-Tolyl)isoindoline-1,3-dione (CAS 2142-03-2)
- 4-(p-Tolyl)-1H-benzo[d][1,2]oxazin-1-one (CAS 51334-76-0)
- 5-(o-Tolyl)indoline-2,3-dione (CAS 893736-02-2)
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- 4-(P-tolyl)thiomorpholine-3,5-dione 1-oxide (CAS 338421-03-7)
Recommended Standards
- 3-(4-Aminophenyl)-4H-chromen-4-one (CAS 297163-64-5)
- 3-(Quinolin-2-yl)benzene-1,2-diol (CAS 756900-91-1)
- 3-(3-Methoxybenzoyl)benzonitrile (CAS 750633-59-1)
- 3,3-Dimethyl-1-(2-nitrophenoxy)butan-2-one (CAS 32278-17-4)
- (S)-N-Acetyl-3-amino-quinuclidine (CAS 134869-59-3)
- Ethyl 4-(2-((2-methyl-1H-indol-3-yl)thio)acetamido)benzoate (CAS 536701-82-3)
- 2-Hydroxy-n-(1-phenylethyl)benzamide (CAS 101090-00-0)
- (S)-2-(Boc-amino)-4-[(3-Boc-guanidino)oxy]butanamide (CAS 190724-03-9)
- Furan-3-carboxamide (CAS 609-35-8)
- 5-(sec-Butyl)-5-propylimidazolidine-2,4-dione (CAS 5467-68-5)
- EThyl 4-aminobut-2-enoate hydrochloride (CAS 2365421-25-4)
- 2-(4-Butylphenyl)butan-2-ol (CAS 152300-86-2)
- 2-(1-Ethyl-1H-pyrazol-3-yl)acetic acid (CAS 1172566-04-9)
- Crustacean Cardioactive Peptide (CAS 107090-96-0)
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