| CAS Number | 1453-58-3 |
|---|---|
| Molecular Formula | C4H6N2 |
| Molecular Weight | 82.107 |
| InChI Key | XKVUYEYANWFIJX-UHFFFAOYSA-N |
| LogP | 0.509 |
| Synonyms |
|
Applications:
Uv-Vis Spectrum of 3-Methylpyrazole
February 11, 2026
If you are looking for optimized HPLC method to analyze 3-Methylpyrazole check our HPLC Applications library
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.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.
HPLC Separation of Dicyandiamide, 1,2,4-Triazole, 3-Methylpyrazole on Primesep 100 Column
December 20, 2019
HPLC Method for Dicyandiamide, 1,2,4-Triazole, 3-Methylpyrazole on Primesep 100 by SIELC Technologies
High Performance Liquid Chromatography (HPLC) Method for Analysis of Dicyandiamide, 1,2,4-Triazole, 3-Methylpyrazole
Dicyandiamide, or cyanoguanidine, is used as a curing agent for epoxy resins. 1,2,4-triazole, is a heterocycle used primarily as an antifungal but has other uses in the pharmaceutical industry as well. 3-methylpyrazole is used in nitrogen fertilizers. All three compounds are structurally similar and can be separated in HPLC using Primesep 100 reverse-phase (RP) mixed-mode cation-exchange (CX) column using acetonitrile (ACN) and water mobile phase with phosphoric acid buffer and UV detected at 200nm and 220nm.
| Column | Primesep 100, 4.6 x 150 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN – 10% |
| Buffer | H3PO4 – 0.5% |
| Flow Rate | 1.0 ml/min |
| Detection | UV 200, 220 nm |
| Class of Compounds | Heterocycle, Amine, Hydrophilic, Ionizable |
| Analyzing Compounds | Dicyandiamide, 1,2,4-Triazole, 3-Methylpyrazole |
Application Column
Primesep 100
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended
3-Methylpyrazole
Dicyandiamide
Separation of 3-Methylpyrazole on Newcrom R1 HPLC column
February 16, 2018
3-Methylpyrazole 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.
Select options