| CAS No. | 37083-35-5 |
| Molecular Formula | C44H26Cl4N4 |
| Molecular Weight | 752.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 752.52 g/mol gives 21H,23H-Porphine, 5,10,15,20-tetrakis(2-chlorophenyl)- distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
21H,23H-Porphine, 5,10,15,20-tetrakis(2-chlorophenyl)- (CAS 37083-35-5), molecular formula C44H26Cl4N4 and molecular weight 752.52 g/mol, is a CATO reference standard with documented purity and traceability.
21H,23H-Porphine, 5,10,15,20-tetrakis(2-chlorophenyl)- (C44H26Cl4N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
| Molecular Formula | C44H26Cl4N4 |
| Molecular Weight | 752.52 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 32.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |