2-(4-Nitrophenyl)benzo[d]oxazole CAS 840-58-4
| CAS No. | 840-58-4 |
| Molecular Formula | C13H8N2O3 |
| Molecular Weight | 240.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(4-Nitrophenyl)benzo[d]oxazole (CAS 840-58-4), molecular formula C13H8N2O3 and molecular weight 240.21 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-Nitrophenyl)benzo[d]oxazole (C13H8N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures 2-(4-Nitrophenyl)benzo[d]oxazole 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 Nitrophenyl Standards
- 2-(3-Nitrophenyl)benzo[d]oxazole (CAS 840-56-2)
- 2-(3-Nitrophenyl)imidazo[1,2-a]pyrimidine (CAS 134044-50-1)
- 4-(3-Nitrophenyl)-1H-pyrrolo[2,3-d]pyrimidine (CAS 1443237-65-7)
- 1-(4-Nitrophenyl)-1H-benzo[d][1,2,3]triazole (CAS 4490-51-1)
- 2-(2-Nitrophenyl)-3H-imidazo[4,5-c]pyridine (CAS 75007-80-6)
- 2-(4-Nitrophenyl)-3H-imidazo[4,5-c]pyridine (CAS 75007-81-7)
- 2-(4-Nitrophenyl)imidazo[1,2-a]pyrimidine (CAS 28266-96-8)
- 7-(3-Nitrophenyl)pyrazolo[1,5-a]pyrimidine (CAS 832740-68-8)
Recommended Standards
- 2-(Carboxymethyl)-4,5-dimethoxybenzoic acid, >96% (CAS 3809-00-5)
- 11-Oxo-11H-pyrido[2,1-b]quinazoline-8-carboxylic acid (CAS 63094-28-0)
- 2-(Carboxymethyl)-4,6-dimethoxybenzoic acid (CAS 4778-99-8)
- 11-Oxo-11H-pyrido[2,1-b]quinazoline-6-carboxylic acid (CAS 4393-98-0)
- 2,6-Dimethyl-4-phenylpyridine-3,5-dicarboxylic acid (CAS 4446-60-0)
- 5,6,7,8-Tetrahydro-5,8-methanoisoquinoline (CAS 105275-30-7)
- 1-Methyl-7,8-dihydroimidazo[1,5-c]pyrimidin-5(6H)-one (CAS 51777-26-5)
- (2,4-Difluorophenyl)(5-methylpyridin-2-yl)methanone (CAS 1187170-63-3)
- Rosuvastatin Impurity 171 (CAS CATO-C4X-1169171)
- (5-(3-Iodopropoxy)-2-nitrophenyl)methanol (CAS 185994-27-8)
- Ethyl 2-(benzylimino)-2,3-dihydrothiazole-4-carboxylate (CAS 126534-13-2)
- 1-(diphenylmethyl)-3-methylazetidin-3-ol hydrochloride (CAS 133891-86-8)
- 2-Amino-7-methoxy-1H-benzo[d]imidazole-5-carboxylic acid (CAS 2172017-91-1)
- Endo-Gly4-Semaglutide (CAS CATO-C4X-222679)
Why CATO?
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