| CAS Number | 10004-44-1 |
|---|---|
| Molecular Formula | C4H5NO2 |
| Molecular Weight | 99.089 |
| InChI Key | KGVPNLBXJKTABS-UHFFFAOYSA-N |
| LogP | 0.46 |
| Synonyms |
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Applications:
UV-Vis Spectrum of Hymexazol
July 12, 2024
For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
HPLC Method for Analysis of Hymexazol (3-Hydroxy-5-methylisoxazole) on Primesep B Column
February 8, 2024
High Performance Liquid Chromatography (HPLC) Method for Analysis of Hymexazol on Primesep B by SIELC Technologies
Separation type: Liquid Chromatography Mixed-mode SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of Hymexazol
3-Hydroxy-5-methylisoxazole can be retained and analyzed using a Primesep 100 mixed-mode stationary phase column. The analysis employs an isocratic method with a simple mobile phase comprising water, acetonitrile (MeCN), and sulfuric acid as a buffer. This method allows for detection using UV at 222 nm
| Column | Primesep B, 4.6 x 150 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN/H2O – 10/90% |
| Buffer | H2SO4 – 0.05% |
| Flow Rate | 1.0 ml/min |
| Detection | UV 220 nm |
| Samples | 1.0 mg/ml in MeCN/H2O – 50/50% |
| Injection volume | 1 µl |
| LOD* | 7 ppb |
| Class of Compounds | Isoxazoles |
| Analyzing Compounds | Hymexazol |
Application Column
Primesep B
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended
Separation of Hymexazol on Newcrom R1 HPLC column
February 16, 2018
Hymexazol can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.
Application Column
Newcrom R1
The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.
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