4-((Dimethylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one CAS 339020-88-1
| CAS No. | 339020-88-1 |
| Molecular Formula | C7H11N3O |
| Molecular Weight | 153.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-((Dimethylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (C7H11N3O) is characterized by an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-((Dimethylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 339020-88-1) is a high-purity analytical reference standard with the molecular formula C7H11N3O and a molecular weight of 153.18 g/mol.
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.
As a certified reference material (CRM), 4-((Dimethylamino)methylene)-5-methyl-2,4-dihydro-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.
Physical & Chemical Properties
| Molecular Formula | C7H11N3O |
| Molecular Weight | 153.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Dimethylamino Standards
- 2-(Dimethylamino)-1-methyl-1H-imidazole-5-carbaldehyde (CAS 1192139-69-7)
- (2-(Dimethylamino)pyrimidin-5-yl)methanol (CAS 954227-77-1)
- (2E)-3-(Dimethylamino)-2-[(1E)-(methoxyimino)methyl]prop-2-enenitrile (CAS 339011-94-8)
- (Z)-3-((dimethylamino)methylene)-5-methylfuran-2(3H)-one (CAS 551931-08-9)
- 1-(2-(Dimethylamino)-1H-imidazol-4-yl)ethanone (CAS 88723-34-6)
- 2-((Dimethylamino)methyl)pyrimidin-4(3H)-one (CAS 34274-24-3)
- 2-(Dimethylamino)-4-methylpyrimidin-5-ol (CAS 92635-40-0)
- 2-(Dimethylamino)-6-methylpyrimidin-4(3H)-one (CAS 19810-73-2)
Recommended Standards
- 4-((2-Hydroxyethyl)amino)phenol (CAS 49865-92-1)
- 4-((Methylamino)methyl)benzene-1,3-diol (CAS 364365-60-6)
- 3-Oxo-2-azabicyclo[2.2.2]octane-1-carbaldehyde (CAS 2816909-83-6)
- 4-(1-Amino-2-hydroxyethyl)phenol (CAS 497165-98-7)
- 1-Hydroxy-5-ethylmethanesulfonate Cumaran 1346603-15-3 (CAS 1346603-15-3)
- 5-Ethyl-5-(4-fluorophenyl)imidazolidine-2,4-dione (CAS 1894-57-1)
- Ethyl 2-fluoro-2-phenylcyclopropane-1-carboxylate (CAS 637041-09-9)
- Methyl 3-(4-bromo-3,5-dimethyl-1h-pyrazol-1-yl)-2-methylpropanoate (CAS 1005634-07-0)
- 3-Chloro-N-(1-hydroxy-2-methylpropan-2-yl)benzamide (CAS 701923-86-6)
- Ramosetron impurity 29 (CAS CATO-C4X-118229)
- 1170897-36-5 Methyl 3-methyl-1,2,3,4-tetrahydropyrido[1,2-a]benzimidazole-7-carboxylate MFCD14281768 (CAS 1170897-36-5)
- 2,2,2-Triethoxyacetonitrile (CAS 68714-37-4)
- Ehp inhibitor 1 (CAS 861249-77-6)
- Atrial Natriuretic Peptide (ANP)(1-28) Alpha (Human, Ovine, Canine) (CAS 91917-63-4)
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