4-Dimethylamino-3-(4-nitro-pyrazol-1-yl)-but-3-en-2-one CAS 1004643-50-8
| CAS No. | 1004643-50-8 |
| Molecular Formula | C9H12N4O3 |
| Molecular Weight | 224.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Dimethylamino-3-(4-nitro-pyrazol-1-yl)-but-3-en-2-one (CAS 1004643-50-8), molecular formula C9H12N4O3 and molecular weight 224.22 g/mol, is a CATO reference standard with documented purity and traceability.
4-Dimethylamino-3-(4-nitro-pyrazol-1-yl)-but-3-en-2-one (C9H12N4O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H12N4O3 |
| Molecular Weight | 224.22 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 4 |
Related Dimethylamino Standards
- (E)-3-(Dimethylamino)-1-(1-methyl-4-nitro-1h-pyrazol-3-yl)prop-2-en-1-one (CAS 1001500-83-9)
- 1-(2-(Dimethylamino)-2-oxoethyl)-6-oxo-1,6-dihydropyridine-3-carboxylic acid (CAS 1036611-49-0)
- 2-(Dimethylamino)hexanoic acid (CAS 5428-01-3)
- Methyl 4-(dimethylamino)-3-nitrobenzoate (CAS 82080-46-4)
- Methyl 5-(dimethylamino)-2-nitrobenzoate (CAS 749863-29-4)
- 2-(Dimethylamino)-4-(trifluoromethyl)thiazole-5-carbaldehyde (CAS 1934465-22-1)
- N1-(2-(dimethylamino)ethyl)-4-nitrobenzene-1,3-diamine (CAS 1339047-06-1)
- (Z)-3-(Dimethylamino)-2-(1,8-naphthyridin-2-yl)acrylonitrile (CAS 1381952-89-1)
Recommended Standards
- 3,3,3-Trifluoro-N-(piperidin-3-ylmethyl)propanamide (CAS 1016726-48-9)
- (S)-2-Amino-4-(2-amino-3-hydroxyphenyl)-4-oxobutanoic Acid (CAS 606-14-4)
- Methyl (2-methyl-5-oxo-4,5,6,7-tetrahydro-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)acetate (CAS 1030517-93-1)
- Trinexapac (free acid) (CAS 143294-89-7)
- 8-bromoquinolin-5-ol (CAS 116836-28-3)
- N-(1-Methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)-2-(thiophen-2-yl)acetamide (CAS 921999-33-9)
- 2-(4-Bromophenyl)-1-methyl-5-oxopyrrolidine-3-carboxylic acid (CAS 1282577-02-9)
- Hydrocortisone Impurity 51 (CAS CATO-C4X-140151)
- 2-((4-Methoxybenzyl)thio)-7-methyl-4H-pyrido[1,2-a][1,3,5]triazin-4-one (CAS 306979-23-7)
- (3-Glycidoxypropyl)bis(trimethylsiloxy)methylsilane (CAS 7422-52-8)
- 2-(Difluoromethyl)-3,5-diiodopyridine-4-acetic acid (CAS 1806826-15-2)
- For-Met-OH (CAS 4289-98-9)
- 5-Bromooxindole (CAS 20870-78-4)
- Autoinducing Peptide I trifluoroacetate salt (CAS 200010-29-3)
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