4-(6-Nitro-1,3-dioxo-1H-benz[de]isoquinolin-2(3H)-yl)benzoic acid CAS 202341-40-0
| CAS No. | 202341-40-0 |
| Molecular Formula | C19H10N2O6 |
| Molecular Weight | 362.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(6-Nitro-1,3-dioxo-1H-benz[de]isoquinolin-2(3H)-yl)benzoic acid (CAS 202341-40-0), molecular formula C19H10N2O6 and molecular weight 362.29 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, 4-(6-Nitro-1,3-dioxo-1H-benz[de]isoquinolin-2(3H)-yl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 362.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 4-(6-Nitro-1,3-dioxo-1H-benz[de]isoquinolin-2(3H)-yl)benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H10N2O6 |
| Molecular Weight | 362.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Nitrogen Atoms | 2 |
Related Nitro Standards
- 2-(6-Nitro-1,3-dioxo-1h-benzo[de]isoquinolin-2(3h)-yl)benzoic acid (CAS 721916-04-7)
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Recommended Standards
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- 2,2,3,3,3-Pentafluoro-1,1-bis(4-methoxyphenyl)propan-1-ol (CAS 722491-64-7)
- Carglumic Acid impurity 6 (CAS CATO-C4X-20796)
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- Ethyl 5,6-Dihydro-6-[(4-methylphenyl)sulfonyl]-4H-thieno[3,2-d][1]benzazepine-2-carboxylate (CAS 153894-28-1)
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