CA Index Name: 5(4H)-Isoxazolone, 4-[5-(5-hydroxy-3-phenyl-4-isoxazolyl)-2,4-pentadien-1-ylidene]-3-phenyl-
Other Names: Bis[3-phenyl-5-oxoisoxazol-4-yl]penta-methineoxonol; 4-[5-(5-Hydroxy-3-phenyl-4-isoxazo-lyl)-2,4-pentadienylidene]-3-phenyl-5(4H)-isoxazolone; 5(4H)-Isoxazolone, 4-[5-(5-hydroxy-3-phenyl-4-isoxa-zolyl)-2,4-pentadienylidene]-3-phenyl-; 1,5-Penta-1,3-dien-1-yl-5-ylidene-bis(5-oxo-3-phenyl-4-isoxazole); OX-V; Oxonol V
Merck Index Number: Not listed
Chemical / Dye Class: Oxonol; Isoxazole
Molecular Formula: C23H16N2O4
Molecular Weight: 384.38
Physical Form: Dark green powder
Solubility: Soluble in ethanol, methanol, dimethyl sulfoxide
Melting Point: 200.5-201.5 °C (decompose)
Boiling Point: 634.1 ± 65.0 °C, pressure: 760 Torr
pKa: 5.06 ± 0.50, most acidic, temperature: 25 °C; —3.45 ± 0.50, most basic, temperature: 25 °C
Absorption (λmax): 610 nm
Emission (λmax): 639 nm
Synthesis: Synthetic methods
Staining Applications: Cerebral cortex; chromaffin granule; lipid vesicles; liposomes; proteoliposomes; submitochondrial particles
Biological Applications: Measuring membrane potential; potassium channel openers; BK channel activator; pyrophosphate assay
Industrial Applications: Photographic materials
Safety / Toxicity: No data available