Methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate CAS 133554-24-2
| CAS No. | 133554-24-2 |
| Molecular Formula | C15H10N2O6 |
| Molecular Weight | 314.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate 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.
CATO supplies Methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate (CAS 133554-24-2), a certified reference material (molecular formula C15H10N2O6, MW 314.25 g/mol) for analytical method development and quality control.
Methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate (C15H10N2O6) contains a flavonoid core, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C15H10N2O6 |
| Molecular Weight | 314.25 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 2-Hydroxy-3-(3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-5-sulfobenzoic acid (CAS 6201-74-7)
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- Methyl 4-hydroxy-6-oxo-1-(3-(trifluoromethyl)phenyl)-1,6-dihydropyridazine-3-carboxylate (CAS 121582-55-6)
- 1-(3-((2-Hydroxy-3-methoxy-5-nitrobenzylidene)amino)phenyl)ethanone (CAS 199992-27-3)
- 5-Hydroxy-2-(4-hydroxy-3-methoxyphenyl)-7-methoxy-4H-chromen-4-one (CAS 25739-41-7)
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Recommended Standards
- 2-(3-Bromo-4-methoxyphenyl)-2-[(trimethylsilyl)oxy]acetonitrile (CAS 1273671-42-3)
- 2,4,5-Tricarboxybenzophenone (CAS 135989-69-4)
- Aspirin Impurity 20 (CAS 7695-70-7)
- Regadenoson Impurity 29 (CAS 16033-28-6)
- 1-Fluoro-2-nitro-4-propoxybenzene (CAS 1048368-31-5)
- 2-Amino-1,5-anhydro-2,4-dideoxy-D-threo-Pentitol (CAS 1240390-32-2)
- 3218-02-8 Cyclohexanemethylamine 4-12-00-00123 (Beilstein Handbook Reference) (Aminomethyl)cyclohexane BRN 0635751 Cyclohexanemethanamine Cyclohexylmethanamine EINECS 221-741-8 NSC 172991 (CAS 3218-02-8)
- Lomefloxacin Impurity 2 (CAS 99726-76-8)
- Bis-PEG13-acid (CAS 2225903-66-0)
- 7-Benzyl-1-oxa-3,7-diazaspiro[4.5]Decan-2-one (CAS 1465210-52-9)
- Phenylephrine Impurity 47 (CAS 57196-61-9)
- 4-(Difluoromethyl)-2-methylpyridine (CAS 1805310-42-2)
- 6-Bromo-4-chlorobenzoxazole (CAS 1226067-99-7)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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