8-Nitrocinnolin-4-ol CAS 2096-40-4
| CAS No. | 2096-40-4 |
| Molecular Formula | C8H5N3O3 |
| Molecular Weight | 191.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 8-Nitrocinnolin-4-ol is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 8-Nitrocinnolin-4-ol (CAS 2096-40-4), a certified reference material (molecular formula C8H5N3O3, MW 191.14 g/mol) for analytical method development and quality control.
8-Nitrocinnolin-4-ol (C8H5N3O3) contains an amino-acid-derived structure, 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 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.
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 | 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.) | 1957 |
| Nitrogen Atoms | 3 |
Related Nitrocinnolin Standards
- 5-Nitrocinnolin-3-ol (CAS 1823800-95-8)
- 3-Nitrocinnolin-4-ol (CAS 500538-67-0)
- 5-Nitrocinnolin-4-ol (CAS 306991-09-3)
- 6-Nitrocinnolin-4(1H)-one (CAS 86222-55-1)
- 7-Nitrocinnolin-4-ol (CAS 412338-77-3)
- 6-Nitrocinnolin-4-amine (CAS 13493-74-8)
- 5-Nitrocinnolin-4-amine (CAS 1936164-20-3)
- 3-Nitrocinnolin-4-amine (CAS 343773-71-7)
Recommended Standards
- 8-Nitro-2H-chromen-2-one (CAS 58981-95-6)
- 8-Nitroimidazo[1,2-a]pyridine-2-carbaldehyde (CAS 885276-72-2)
- 8-Hydroxypyrido[3,2-d]pyrimidine-7-carboxylic acid (CAS 65332-71-0)
- 8-Nitroquinoxalin-2(1H)-one (CAS 73148-21-7)
- N-((1-Benzylpiperidin-2-yl)methyl)-2-chloro-N-isopropylacetamide (CAS 1353984-42-5)
- 4-(3,5-Dioxo-1,2,4-triazolidin-1-yl)benzoic acid (CAS 1087784-49-3)
- 6-Bromo-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (CAS 439928-25-3)
- Chimonanthine (CAS 5545-89-1)
- Ethyl 4-(2,2,2-trifluoroethyl)-1H-pyrrole-2-carboxylate (CAS 2163771-77-3)
- Carbocysteine/Carbocisteine (CAS 638-23-3)
- Lamivudine Impurity 19 (CAS 953806-67-2)
- Benzyl N-(5-chloro-2-fluorophenyl)carbamate (CAS 1876328-40-3)
- 5-Methyl-1-(2-(p-tolyloxy)ethyl)indoline-2,3-dione (CAS 620931-50-2)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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