4-(3-Chloro-4-fluorophenyl)-1,2-dimethyl-5-(quinoxalin-6-yl)-1,2-dihydro-3H-pyrazol-3-one CAS 937279-03-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 937279-03-3 |
| Molecular Formula | C19H14ClFN4O |
| Molecular Weight | 368.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(3-Chloro-4-fluorophenyl)-1,2-dimethyl-5-(quinoxalin-6-yl)-1,2-dihydro-3H-pyrazol-3-one (CAS 937279-03-3) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C19H14ClFN4O. Molecular weight: 368.79 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C19H14ClFN4O |
| Molecular Weight | 368.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
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- 4,4'-((5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methylene)dimorpholine (CAS 956754-27-1)
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Recommended Standards
- 2-[[[4-(Acetylamino)phenyl]sulfonyl]amino]-4-chlorobenzoic acid (CAS 851109-36-9)
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- (S)-2-(4-Nitrophenylsulfonamido)-3-phenylpropanoyl chloride (CAS 146815-23-8)
- 8-Benzyl-4-(2-methoxybenzoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326808-86-9)
- 6-Ethyl-3-methylbenzofuran (CAS 71507-43-2)
- 3-Azepan-2-ylmethyl-benzo[b]thiophene-2-carboxylic acid(2-hydroxy-ethyl)-amide hydrochloride (CAS 1361112-86-8)
- 6-(2-Methoxyethoxy)benzofuran-2-carboxylic acid (CAS 1352541-67-3)
- 7-(1H-pyrrol-1-yl)-2,4-bis(trifluoromethyl)-1,8-naphthyridine (CAS 338412-21-8)
- 3,3-Difluoropropanenitrile (CAS 10353-60-3)
- Neuropeptide EI (human, mouse, rat) (CAS 125934-45-4)
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