3-(4-Chlorophenyl)-7-methyl-[1,2,4]triazolo[4,3-a]pyridine CAS 56543-82-9
| CAS No. | 56543-82-9 |
| Molecular Formula | C13H10ClN3 |
| Molecular Weight | 243.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(4-Chlorophenyl)-7-methyl-[1,2,4]triazolo[4,3-a]pyridine (CAS 56543-82-9), molecular formula C13H10ClN3 and molecular weight 243.69 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H10ClN3, 3-(4-Chlorophenyl)-7-methyl-[1,2,4]triazolo[4,3-a]pyridine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 243.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 3-(4-Chlorophenyl)-7-methyl-[1,2,4]triazolo[4,3-a]pyridine 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 | C13H10ClN3 |
| Molecular Weight | 243.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
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Recommended Standards
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Why CATO?
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