7-Nitroquinazolin-4(3H)-one CAS 20872-93-9
| CAS No. | 20872-93-9 |
| Molecular Formula | C8H5N3O3 |
| Molecular Weight | 191.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Nitroquinazolin-4(3H)-one (CAS 20872-93-9) is a high-purity analytical reference standard with the molecular formula C8H5N3O3 and a molecular weight of 191.14 g/mol.
Structurally, 7-Nitroquinazolin-4(3H)-one (C8H5N3O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 191.14 g/mol, it falls into the medium-molecular-weight range. 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.
CATO manufactures 7-Nitroquinazolin-4(3H)-one 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 | C8H5N3O3 |
| Molecular Weight | 191.14 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.) | 1962 |
| Nitrogen Atoms | 3 |
Related Nitroquinazolin Standards
- 6-Nitroquinazolin-4-amine (CAS 49675-68-5)
- 2-Methyl-8-nitroquinazolin-4(3H)-one (CAS 1361455-58-4)
- 2-Methyl-7-nitroquinazolin-4-ol (CAS 24688-29-7)
- 3-Ethyl-6-nitroquinazolin-4(3h)-one (CAS 78875-00-0)
- 3-Ethyl-7-nitroquinazolin-4(3H)-one (CAS 695199-01-0)
- n1-(6-Nitroquinazolin-4-yl)ethane-1,2-diamine (CAS 1484715-27-6)
- 3-[(6-nitroquinazolin-4-yl)amino]propane-1,2-diol (CAS 1478560-05-2)
- 1,3-Bis(1-(7-nitroquinazolin-4-yl)piperidin-4-yl)propane (CAS 52791-15-8)
Recommended Standards
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- 8-Nitro-2H-chromen-2-one (CAS 58981-95-6)
- 1H-imidazole-2-carboximidamide (CAS 212558-21-9)
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- 5-((tert-Butyldimethylsilyl)oxy)-3-iodo-1H-indazole (CAS 1254473-76-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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