7,9-Dichloro-2,5-bis(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine CAS 303059-68-9
| CAS No. | 303059-68-9 |
| Molecular Formula | C24H20Cl2N2O3 |
| Molecular Weight | 455.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7,9-Dichloro-2,5-bis(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7,9-Dichloro-2,5-bis(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (CAS 303059-68-9) is a high-purity analytical reference standard with the molecular formula C24H20Cl2N2O3 and a molecular weight of 455.33 g/mol.
Based on its molecular formula C24H20Cl2N2O3, 7,9-Dichloro-2,5-bis(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine contains a steroid core, 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 455.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 7,9-Dichloro-2,5-bis(4-methoxyphenyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C24H20Cl2N2O3 |
| Molecular Weight | 455.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 2-({[2,4-dichloro-5-(2-methoxyethoxy)phenyl]carbamoyl}methanesulfonyl)-N,N-diethylacetamide (CAS 341965-10-4)
- Ethyl 2-((4-(3-(4,5-dichloro-2-methylphenyl)-4,5-dihydro-1H-pyrazol-1-yl)phenyl)sulfonyl)acetate (CAS 35441-14-6)
- 2,2-Dichloro-N-(3,5-diiodophenyl)acetamide (CAS 1196501-25-3)
- 2,5-Dichloro-N-(4-(4-pentylcyclohexyl)phenyl)benzenesulfonamide (CAS 478041-42-8)
- 2,4-Dichloro-5-(n-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)sulfamoyl)benzoic acid (CAS 380347-78-4)
- 3,4-Dichloro-5-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylsulfamoyl)-benzoic acid (CAS 380349-12-2)
- 2,3-Dichloro-N-(4-(((3-(trifluoromethyl)phenyl)thio)methyl)phenyl)benzamide (CAS 338398-66-6)
- 3,4-Dichloro-N-(4-(((3-(trifluoromethyl)phenyl)thio)methyl)phenyl)benzamide (CAS 338398-65-5)
Recommended Standards
- 8-Bromo-2-(methylthio)-4-((4-phenoxyphenyl)amino)pyrido[4,3-d]pyrimidin-5(6H)-one (CAS 1300611-33-9)
- Avanafil Impurity 21 (CAS CATO-C4X-111821)
- MAleimido-3,5-disuccinimidyl isophthalate (CAS 1257094-24-8)
- (1E,4E)-1-(2-(6-(2,4-dichlorobenzyl)pyridazin-3-yl)hydrazinyl)-5-(4-methoxyphenyl)penta-1,4-dien-3-one (CAS 860649-37-2)
- 2-[3-(4-methoxyphenyl)prop-2-enamido]benzoic acid (CAS 697235-51-1)
- 6-Chloro-4H-1,3-benzodioxine-8-carbaldehyde (CAS 63944-31-0)
- (3aS,4S,6R,6aR)-6-(6-Hydroxy-9H-purin-9-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carboxylic acid (CAS 28440-13-3)
- 2-Bromo-5-nitropyridin-4-amine (CAS 84487-15-0)
- Sodium 8-hydroxynaphthalene-1,6-disulfonate (CAS 83732-80-3)
- N-Allyl-2,6-dimethoxy-5-(methylthio)pyrimidin-4-amine (CAS 89587-77-9)
- n-(1-(Furan-2-yl)propan-2-yl)isobutyramide (CAS 1235118-81-6)
- Methyl Hydroxybenzoic Acid (CAS 586-30-1)
- methyl 2-oxo-1H-pyrimido[1,2-b]indazole-10-carboxylate (CAS 2608911-75-5)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
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