1-Nitroisoquinoline CAS 19658-76-5
| CAS No. | 19658-76-5 |
| Molecular Formula | C9H6N2O2 |
| Molecular Weight | 174.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 174.16 g/mol gives 1-Nitroisoquinoline distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1-Nitroisoquinoline (CAS 19658-76-5), a certified reference material (molecular formula C9H6N2O2, MW 174.16 g/mol) for analytical method development and quality control.
1-Nitroisoquinoline (C9H6N2O2) 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).
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 | C9H6N2O2 |
| Molecular Weight | 174.16 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 DMSO, DMF, methanol |
| 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 | 2 |
Related Nitroisoquinoline Standards
- 7-Nitroisoquinoline (CAS 13058-73-6)
- 3-Nitroisoquinoline (CAS 203988-06-1)
- 4-Nitroisoquinoline (CAS 36073-93-5)
- 6-Nitroisoquinoline (CAS 70538-57-7)
- 8-Nitroisoquinoline (CAS 7473-12-3)
- 8-Methyl-5-nitroisoquinoline (CAS 1050267-63-4)
- 3-Methyl-5-nitroisoquinoline (CAS 18222-17-8)
- 6-Methyl-5-nitroisoquinoline (CAS 188121-31-5)
Recommended Standards
- 5-(Hydroxymethyl)-6-methylpyrazine-2,3-dicarbonitrile (CAS 192933-53-2)
- (E)-3-(4-nitrophenyl)acrylonitrile (CAS 29246-70-6)
- 2-(4H-1,2,4-triazole-3-carbonyl)pyridine (CAS 1909336-64-6)
- (E)-4-(2-nitrovinyl)benzonitrile (CAS 5153-73-1)
- 1-(3-(Tetrahydrofuran-2-yl)propyl)-1h-1,2,3-triazol-4-amine (CAS 1519211-49-4)
- 4,5-Dichloronicotinonitrile (CAS 1009334-06-8)
- Potassium (3-(tert-butoxycarbonyl)-7,7-difluoro-3-azabicyclo[4.1.0]heptan-6-yl)trifluoroborate (CAS 2853476-41-0)
- 9051-88-1 2-Oxepanone, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) (CAS 9051-88-1)
- 1,6-Hexanediol ethoxylate diacrylate (CAS 84170-27-4)
- Methyl 2-(5-cyano-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)thiophene-3-carboxylate (CAS 338750-51-9)
- 1-(5-Methyl-1H-pyrazol-4-yl)ethan-1-ol (CAS 1357352-56-7)
- 2-((2-Methylthiazol-5-yl)methyl)cyclopentan-1-ol (CAS 1510499-42-9)
- (3',5'-Dichloro-[1,1'-biphenyl]-4-yl)methanaminehydrochloride (CAS 518357-39-6)
- Semaglutide impurity 86 (CAS CATO-C4X-152686)
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