6-Methyl-3-(4-nitrophenyl)-2H-benzo[b][1,4]oxazine CAS 400078-33-3
| CAS No. | 400078-33-3 |
| Molecular Formula | C15H12N2O3 |
| Molecular Weight | 268.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 6-Methyl-3-(4-nitrophenyl)-2H-benzo[b][1,4]oxazine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 268.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
6-Methyl-3-(4-nitrophenyl)-2H-benzo[b][1,4]oxazine (CAS 400078-33-3), molecular formula C15H12N2O3 and molecular weight 268.27 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 6-Methyl-3-(4-nitrophenyl)-2H-benzo[b][1,4]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 | C15H12N2O3 |
| Molecular Weight | 268.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-Methyl-3-(4-nitrophenyl)indolin-2-one (CAS 1848979-83-8)
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- 1-(2-Nitrophenyl)-1H-imidazole-2-sulfonamide (CAS 89518-00-3)
- 3-[(4-Nitrophenyl)methanesulfonyl]-1H-1,2,4-triazole (CAS 339105-78-1)
- 5-(3-Nitrophenyl)-3-phenyl-1,2,4-oxadiazole (CAS 28825-11-8)
- 2-(3-Nitrophenyl)imidazo[1,2-a]pyrimidine-3-carbaldehyde (CAS 1216207-16-7)
- 2-(3-Nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 16063-03-9)
- 2-(4-Nitrophenyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 16063-05-1)
Recommended Standards
- 6-methyl-3-(4-methylphenyl)pyrido[3,2-d][1,2]oxazole-4-carboxylic acid (CAS 954576-62-6)
- 7-(3,5-Dihydro-2H-benzo[e][1,4]dioxepin-3-yl)-7H-purine (CAS 918304-46-8)
- 6-Methyl-2-(5-oxo-3-phenyl-2,5-dihydro-1H-pyrazol-1-yl)-3,4-dihydropyrimidin-4-one (CAS 866019-64-9)
- 7-Amino-2-methyl-3-phenylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 956576-87-7)
- 4-(1-Phenyl-1H-benzo[d]imidazol-2-yl)aniline (CAS 65847-34-9)
- Methyl 2-nitro-5-(trifluoromethoxy)benzoate (CAS 1214378-89-8)
- 5-Amino-2-(5-aminobenzo[d]oxazol-2-yl)phenol (CAS 66401-81-8)
- N1,N1-di(naphthalen-2-yl)benzene-1,4-diamine (CAS 68941-03-7)
- 1-(3-Chloropyrazin-2-yl)piperidin-3-ol (CAS 1249473-10-6)
- JDTic (CAS 361444-66-8)
- Ilaprazole impurity 201 (CAS CATO-C4X-1130201)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-1-ol (CAS 1560648-02-3)
- Methyl 2-(p-tolyl)-1H-indole-3-carboxylate (CAS 1098340-29-4)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
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