5-Nitrobenzo[c][1,2,5]oxadiazole 1-oxide CAS 18771-86-3
| CAS No. | 18771-86-3 |
| Molecular Formula | C6H3N3O4 |
| Molecular Weight | 181.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Nitrobenzo[c][1,2,5]oxadiazole 1-oxide (CAS 18771-86-3), a certified reference material (molecular formula C6H3N3O4, MW 181.11 g/mol) for analytical method development and quality control.
The molecular framework of 5-Nitrobenzo[c][1,2,5]oxadiazole 1-oxide (C6H3N3O4) is characterized by an amino-acid-derived structure, 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H3N3O4 |
| Molecular Weight | 181.11 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.) | 1962 |
| Nitrogen Atoms | 3 |
Related Nitrobenzo Standards
- 5-Nitrobenzo[c][1,2,5]oxadiazol-4-ol (CAS 22250-52-8)
- 7-Nitrobenzo[c][1,2,5]oxadiazol-4-ol (CAS 22250-54-0)
- 5-Methyl-6-nitrobenzo[d][1,3]dioxole (CAS 32996-27-3)
- 5-Nitrobenzo[d][1,2,3]thiadiazole (CAS 13599-78-5)
- 5-Nitrobenzo[c][1,2,5]thiadiazole (CAS 16252-88-3)
- 4-nitrobenzo[c][1,2,5]thiadiazole (CAS 6583-06-8)
- 6-Nitrobenzo[d][1,2,3]thiadiazole (CAS 29241-16-5)
- 4-Nitrobenzo[d]isothiazole (CAS 139037-03-9)
Recommended Standards
- 1-(6-Oxa-3-azabicyclo[3.1.0]hexan-3-yl)-2,2,2-trifluoroethanone (CAS 164931-85-5)
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- 5-(Trifluoromethyl)-3,4-dihydro-2H-pyrrole-2-carboxylic acid (CAS 1609965-85-6)
- 2-(5-nitrofuran-2-yl)-1,3,4-oxadiazole (CAS 89488-64-2)
- 286013-19-2 2-Sulfanyl(1-~13~C)ethan-1-ol DTXSID80745760 (CAS 286013-19-2)
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Why CATO?
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