5-Nitro-2-phenyl-1,3-benzoxazole CAS 891-43-0
| CAS No. | 891-43-0 |
| Molecular Formula | C13H8N2O3 |
| Molecular Weight | 240.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Nitro-2-phenyl-1,3-benzoxazole (CAS 891-43-0), a certified reference material (molecular formula C13H8N2O3, MW 240.21 g/mol) for analytical method development and quality control.
The molecular framework of 5-Nitro-2-phenyl-1,3-benzoxazole (C13H8N2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 5-Nitro-2-phenyl-1,3-benzoxazole 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 | C13H8N2O3 |
| Molecular Weight | 240.21 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.) | 1957 |
| Nitrogen Atoms | 2 |
Related Nitro Standards
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Recommended Standards
- 5-Amino-[2,3;2,3]terfuran-4-carbonitrile (CAS 350793-33-8)
- 9-Oxo-9H-xanthene-2-carboxylic acid (CAS 40274-67-7)
- 5-Acetoacetyl-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione (CAS 51291-11-3)
- Dibenzofuran 2-Oxoacetic Acid (CAS 859745-04-3)
- (2Z)-2-[(3-Bromophenyl)methylidene]-7-(4-chlorophenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one (CAS 337921-37-6)
- Bisphenol A (3-chloro-2-hydroxypropyl) Glycidyl Ether (CAS 13836-48-1)
- 2-(2-Ethyl-1-piperidinyl)-5-methylaniline (CAS 946684-77-1)
- 4-Amino-2-fluoro-3-methylbenzoic acid (CAS 194804-84-7)
- Isometheptane Tartrate (Dimethylheptene Methylamine Tartrate) (CAS 5984-50-9)
- 1-(2,4-Difluorophenyl)-1H-indole (CAS 1380230-31-8)
- 2,9-Dibutyl-1,10-phenanthroline (CAS 85575-93-5)
- Ethyl 2-amino-6-bromonicotinate (CAS 1806997-65-8)
- CICL-225 (CAS CATO-C3D-263019)
- Semaglutide Impurity 10 (CAS CATO-C4X-222610)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com