5-(3-Methoxy-4-nitrophenyl)-1,3,4-oxadiazol-2(3H)-one CAS 648917-62-8
| CAS No. | 648917-62-8 |
| Molecular Formula | C9H7N3O5 |
| Molecular Weight | 237.17 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.
5-(3-Methoxy-4-nitrophenyl)-1,3,4-oxadiazol-2(3H)-one (CAS 648917-62-8) is a high-purity analytical reference standard with the molecular formula C9H7N3O5 and a molecular weight of 237.17 g/mol.
Based on its molecular formula C9H7N3O5, 5-(3-Methoxy-4-nitrophenyl)-1,3,4-oxadiazol-2(3H)-one 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 237.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H7N3O5 |
| Molecular Weight | 237.17 g/mol |
| Appearance | Pale yellow to 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
Related Methoxy Standards
- (4-methoxy-3,5-dinitro-phenyl)-acetonitrile (CAS 1440526-42-0)
- 3-Methoxy-5-nitrobenzofuran-2-carboxylic acid (CAS 1710661-36-1)
- 4-Methoxy-6-methyl-5-nitroisobenzofuran-1,3-dione (CAS 89586-40-3)
- 5-Methoxy-3-(4-nitrophenyl)-1,3,4-oxadiazol-2(3H)-one (CAS 359714-34-4)
- 6-Methoxy-7-nitroquinazoline-2,4(1H,3H)-dione (CAS 648927-57-5)
- 7-Methoxy-5-nitrobenzofuran-2-carboxylic acid (CAS 25672-29-1)
- 3-Methoxy-2-methyl-4-(2,2,2-trifluoroethoxy)pyridine 1-oxide (CAS 122307-62-4)
- 4-Methoxy-2-nitro-1-(trifluoromethoxy)benzene (CAS 1214344-76-9)
Recommended Standards
- 5-(5-Methyl-1,2,4-oxadiazol-3-yl)-3-nitrobenzene-1,2-diol (CAS 923288-13-5)
- 4-(Trifluoroacetylamino)benzoic Acid-d4 (CAS 461426-32-4)
- 5-(5-Methyl-1,3,4-oxadiazol-2-yl)-3-nitrobenzene-1,2-diol (CAS 923288-14-6)
- 4-(1,3-Dioxopropan-2-yl)-3-nitrobenzoic acid (CAS 205985-96-2)
- Brimonidine Impurity 8 (CAS 40254-90-8)
- 1,2-Naphthalenedicarbonitrile, 97% (CAS 19291-76-0)
- 6-(Thiophen-3-yl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (CAS 320416-40-8)
- 1-Benzyl-4-(furan-2-carbonyl)piperazine (CAS 346698-80-4)
- 4-((4-Chlorobenzyl)oxy)-3-ethoxybenzoic acid (CAS 401827-45-0)
- Tri-p-tolylgallium (CAS 18797-37-0)
- 5-Bromo-2-methoxynicotinaldehyde (CAS 103058-87-3)
- 6-Benzyl 5-(tert-butyl) (S)-3-benzyl-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-5,6-dicarboxylate (CAS 2412496-30-9)
- Triethyl-d15 Phosphate (CAS 135942-11-9)
- 81988-89-8 UH11FDQ454 Ramoplanin A(sub 3) Ramoplanin A3 (S)-2-(3-Chloro-4-hydroxyphenyl)-N-(N(sup 2)-((2Z,4Z)-8-methyl-2,4-nonadienoyl)-(S)-asparaginyl-(2S,3S)-3-hydroxyasparaginyl-(R)-2-(p-hydroxyphenyl)glycyl-(R)-ornithyl-(2R,3R)-allothreonyl-2-(p-hydroxyphenyl)glycyl-2-(p-hydroxyphenyl)glycyl-(2S,3S)-allothreonyl-(S)-phenylalanyl-(R)-ornithyl-(S)-2-(p-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycyl-(2R,3R)-allothreonyl-(S)-2-(p-hydroxyphenyl)glycylglycyl-(S)-leucyl-(R)-alanyl)glycine psi1-lactone Ramoplanin A 1 (peptide moiety), 1-(N(sup 2)-methyl-1-oxo-2,4-nonadienyl)-L-asparagine)-11-(L-2-(4-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycine)-, (Z,Z)- UNII-UH11FDQ454 (CAS 81988-89-8)
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