2,4-Dihydro-5-[4-(1-methylethoxy)phenyl]-3h-pyrazol-3-one CAS 442872-58-4
| CAS No. | 442872-58-4 |
| Molecular Formula | C12H14N2O2 |
| Molecular Weight | 218.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,4-Dihydro-5-[4-(1-methylethoxy)phenyl]-3h-pyrazol-3-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.
2,4-Dihydro-5-[4-(1-methylethoxy)phenyl]-3h-pyrazol-3-one (CAS 442872-58-4), molecular formula C12H14N2O2 and molecular weight 218.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 2,4-Dihydro-5-[4-(1-methylethoxy)phenyl]-3h-pyrazol-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 218.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H14N2O2 |
| Molecular Weight | 218.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
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- 1,3-Dihydro-1-(2-hydroxyethyl)-3-(1-methylethenyl)-2H-benzimidazol-2-one (CAS 81942-81-6)
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Recommended Standards
- 2,4-Bis(allyloxy)benzaldehyde (CAS 96601-10-4)
- 2,8-Diaminononanedioic acid (CAS 98951-66-7)
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- 2-[[2-(Boc-amino)ethyl]amino]acetic Acid (CAS 90495-99-1)
- 5-(Benzyloxy)-2-(benzyloxymethyl)-4H-pyran-4-one (CAS 892152-75-9)
- N1,N1-Dimethyl-1,3-benzenediamine (CAS 2836-04-6)
- Ethyl 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylate (CAS 623565-57-1)
- Ganoderic acid Y (CAS 86377-52-8)
- tert-Butyl 5-methyl-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate (CAS 2384992-51-0)
- 1-(2-Chloroacetyl)piperidine-4-carboxamide (CAS 375359-83-4)
- 2-(4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)methyl)phenoxy)-1-(5-(2,4-dichlorophenyl)furan-2-yl)ethan-1-one (CAS 339106-72-8)
- 4-Methoxy-2-(trifluoromethoxy)phenylboronic acid (CAS 1391918-92-5)
- 3-Nitro-2-(piperazin-1-yl)benzoic acid (CAS 374063-97-5)
- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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