4-Nitrobenzo[c][1,2,5]oxadiazole CAS 16322-19-3
| CAS No. | 16322-19-3 |
| Molecular Formula | C6H3N3O3 |
| Molecular Weight | 165.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Nitrobenzo[c][1,2,5]oxadiazole.
4-Nitrobenzo[c][1,2,5]oxadiazole (CAS 16322-19-3) is a high-purity analytical reference standard with the molecular formula C6H3N3O3 and a molecular weight of 165.11 g/mol.
Based on its molecular formula C6H3N3O3, 4-Nitrobenzo[c][1,2,5]oxadiazole contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 165.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 4-Nitrobenzo[c][1,2,5]oxadiazole 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 | C6H3N3O3 |
| Molecular Weight | 165.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 3 |
Related Nitrobenzo Standards
- 5-Nitrobenzo[c][1,2,5]oxadiazole (CAS 18772-11-7)
- 7-Nitrobenzo[d]oxazole (CAS 125533-84-8)
- 6-Nitrobenzo[c]isoxazole (CAS 15264-44-5)
- 4-Nitrobenzo[d]isoxazole (CAS 1823353-28-1)
- 4-Nitrobenzo[c]isoxazole (CAS 188860-13-1)
- 6-Nitrobenzo[d]isoxazole (CAS 39835-08-0)
- 4-Nitrobenzo[d][1,3]dioxole (CAS 72744-45-7)
- 5-Nitrobenzo[d][1,3]dioxole (CAS 2620-44-2)
Recommended Standards
- 3,4-Dimethyl-5-(Trifluoromethyl)-1,2-Oxazole (CAS 161144-77-0)
- 3-Nitro-6-oxo-1,6-dihydropyridine-2-carbonitrile (CAS 1697248-71-7)
- 2,2,2-Trifluoro-1-(1h-pyrrol-2-yl)ethan-1-ol (CAS 151509-97-6)
- 4-hydroxy-3-nitropicolinonitrile (CAS 1805177-81-4)
- 3-aminonaphthalene-2-carbonitrile (CAS 27533-39-7)
- Isopropyl Phenyl Phosphate (CAS 46355-07-1)
- 2,4-Dimethyl-6-oxo-1,6-dihydropyridine-3-carbonitrile (CAS 1704-19-4)
- N-(Cyclopropylmethyl)pyridin-3-amine (CAS 939755-71-2)
- 2-((4-Amino-5-oxo-4,5-dihydro-1,2,4-triazin-3-yl)thio)-N-(3,4-dichlorophenyl)acetamide (CAS 898622-16-7)
- Ethyl 2,2-dimethyl-6-oxocyclohexanecarboxylate (CAS 2979-10-4)
- 5-Amino-1-(4-chloro-2-ethoxy-6-fluorophenyl)-1H-pyrazole-3-carbonitrile (CAS 99479-46-6)
- 2-(4-Bromo-2-fluorophenoxy)-N-isopropylacetamide (CAS 923105-75-3)
- tert-Butyl n-(2-[(pyridazin-3-yl)amino]ethyl)carbamate (CAS 1692548-94-9)
- D-Gln19-Tirzepatide (CAS CATO-CPTD788915)
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