5-Methyl-1-(2,4,5-trichlorophenyl)-1H-pyrazol-3(2H)-one CAS 14575-29-2
| CAS No. | 14575-29-2 |
| Molecular Formula | C10H7Cl3N2O |
| Molecular Weight | 277.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C10H7Cl3N2O, 5-Methyl-1-(2,4,5-trichlorophenyl)-1H-pyrazol-3(2H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 277.53 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.
5-Methyl-1-(2,4,5-trichlorophenyl)-1H-pyrazol-3(2H)-one (CAS 14575-29-2), molecular formula C10H7Cl3N2O and molecular weight 277.53 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Methyl-1-(2,4,5-trichlorophenyl)-1H-pyrazol-3(2H)-one 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 | C10H7Cl3N2O |
| Molecular Weight | 277.53 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-Methyl-1-(2,4,6-trichlorophenyl)-1H-pyrazol-5(4H)-one (CAS 14657-25-1)
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- 3-Methyl-1-(2,4,6-trichlorophenyl)-1H-pyrazol-5-amine (CAS 106259-87-4)
- 1-(2,4,6-Trichlorophenyl)-1H-pyrrole-2,5-dione (CAS 13167-25-4)
- 1-(2,4,5-Trichlorophenyl)-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 31489-22-2)
- 5-(2,4,5-Trichlorophenyl)furan-2-carbaldehyde (CAS 68502-15-8)
- 4-(2,3,4-Trichlorophenyl)thiazol-2-amine (CAS 123971-41-5)
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Recommended Standards
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- 2-(1-chloroethyl)-5-(2,4-dichlorophenyl)-1,3,4-oxadiazole (CAS 1156191-87-5)
- (R)-2-amino-2-(2-chloro-5-(trifluoromethyl)phenyl)ethan-1-ol (CAS 1213581-40-8)
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- 6-(Pyrimidin-5-yloxy)pyridin-3-amine (CAS 287944-20-1)
- Bilastine impurity 97 (CAS CATO-C4X-225397)
- (4-bromo-1-methyl-1H-pyrazol-3-yl)methanol (CAS 915707-65-2)
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