7,9-Dichloro-2-(4-methoxyphenyl)-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine CAS 303061-34-9
| CAS No. | 303061-34-9 |
| Molecular Formula | C24H20Cl2N2O2 |
| Molecular Weight | 439.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 439.33 g/mol gives 7,9-Dichloro-2-(4-methoxyphenyl)-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 7,9-Dichloro-2-(4-methoxyphenyl)-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (CAS 303061-34-9), a certified reference material (molecular formula C24H20Cl2N2O2, MW 439.33 g/mol) for analytical method development and quality control.
Based on its molecular formula C24H20Cl2N2O2, 7,9-Dichloro-2-(4-methoxyphenyl)-5-(p-tolyl)-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 439.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 7,9-Dichloro-2-(4-methoxyphenyl)-5-(p-tolyl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazine 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 | C24H20Cl2N2O2 |
| Molecular Weight | 439.33 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}methanesulfinyl)-N,N-diethylacetamide (CAS 341965-08-0)
- 2,4-Dichloro-N'-{2',3'-dihydrospiro[adamantane-2,1'-indene]-3'-ylidene}benzohydrazide (CAS 400083-54-7)
- N-(2,4-Dichloro-5-methoxyphenyl)-3-(2-nitrophenoxy)thiophene-2-carboxamide (CAS 339015-20-2)
- N-(2,4-dichloro-5-methoxyphenyl)-3-(4-nitrophenoxy)thiophene-2-carboxamide (CAS 339015-25-7)
- 3-(5,6-Dichloro-1-(2,4-dichlorobenzyl)-1H-benzo[d]imidazol-2-yl)pyridin-2(1H)-one (CAS 338412-08-1)
- 3-(5,6-Dichloro-1-(2,6-dichlorobenzyl)-1H-benzo[d]imidazol-2-yl)pyridin-2(1H)-one (CAS 338774-41-7)
- 3-{5,6-dichloro-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazol-2-yl}-1,2-dihydropyridin-2-one (CAS 338774-14-4)
- 5-{5,6-dichloro-1-[(2,4-dichlorophenyl)methyl]-1H-1,3-benzodiazol-2-yl}-1,2-dihydropyridin-2-one (CAS 338773-97-0)
Recommended Standards
- 4-[(2E)-3-(Thiophen-2-yl)prop-2-enoyl]phenyl 2,5-dichlorobenzene-1-sulfonate (CAS 297150-16-4)
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- 3-Amino-N-(4-bromo-3-methylphenyl)-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide (CAS 445267-33-4)
- tert-butyl 2-[(4-bromo-1-methyl-1H-indol-3-yl)methyl]-1H-indole-1-carboxylate (CAS 1449331-43-4)
- SB-242084 Dihydrochloride (CAS 1049747-87-6)
- 2-(1-Methyl-piperidin-4-ylmethoxy)-ethylamine (CAS 1353971-78-4)
- 5-(3-(Pyridin-4-yl)-1,2,4-oxadiazol-5-yl)-1-(2-(trifluoromethyl)benzyl)pyridin-2(1H)-one (CAS 1396856-29-3)
- 3-(3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-yl)aniline (CAS 885953-48-0)
- 2-bromo-4-methylcyclohexan-1-one (CAS 27579-55-1)
- 3-(2,4,6-Trimethoxyphenyl)propan-1-ol (CAS 941690-20-6)
- Tert-butyl 4-amino-4-(2-aminoethyl)piperidine-1-carboxylate (CAS 2167191-23-1)
- Boc-β-iodo-Ala-OMe (CAS 93267-04-0)
- (4-Methylquinazolin-2-yl)methanamine dihydrochloride (CAS 1384431-16-6)
- Custom peptides (CAS CATO-CPTD788509)
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