5,12-Dihydroquinoxalino[2,3-b]phenazine-2,9-disulfonic acid CAS 1790-56-3
| CAS No. | 1790-56-3 |
| Molecular Formula | C21H15N |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5,12-Dihydroquinoxalino[2,3-b]phenazine-2,9-disulfonic acid (CAS 1790-56-3), a certified reference material (molecular formula C21H15NNa, MW 304.35 g/mol) for analytical method development and quality control.
The molecular framework of 5,12-Dihydroquinoxalino[2,3-b]phenazine-2,9-disulfonic acid (C21H15NNa) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C21H15N Na |
| Molecular Weight | 304.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Dihydroquinoxalino Standards
- 5,12-Dihydroquinoxalino[2,3-b]quinoxaline (CAS 531-46-4)
- 5,12-dihydroquinoxalino[2,3-b]phenazine (CAS 531-47-5)
- 5,12-Dihydroquinoxalino[2,3-b]phenazine-2,3,9-trisulfonic Acid Trisodium Salt (Technical grade) DISCONTINUED (CAS 55262-30-1)
- Sodium 5,14-dihydroquinoxalino[2,3-b]phenazine-2,9-disulfonate (CAS 77883-76-2)
Recommended Standards
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- 1-bromo-3-(oxolan-2-yl)propan-2-one (CAS 1538694-77-7)
- 2-(3-Aminooxetan-3-yl)ethan-1-ol oxalate (CAS 1404373-81-4)
- Trimethyl((tetrahydro-2H-pyran-4-yl)ethynyl)silane (CAS 1604039-54-4)
- Bradykinin-Like Neuropeptide (Aplysia californica) (H-1654.0001) (CAS 165174-60-7)
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