4-Di-16-ASP

• CAT Number: M021317
• CAS Number: 114041-00-8
• Molecular Formula: C46H79IN2
• Molecular Weight: 787.04
• Purity: ≥95%
• Synonyms: N,N-dihexadecyl-4-[(E)-2-(1-methylpyridin-1-ium-4-yl)ethenyl]aniline;iodide
• InChI: InChI=1S/C46H79N2.HI/c1-4-6-8-10-12-14-16-18-20-22-24-26-28-30-40-48(41-31-29-27-25-23-21-19-17-15-13-11-9-7-5-2)46-36-34-44(35-37-46)32-33-45-38-42-47(3)43-39-45;/h32-39,42-43H,4-31,40-41H2,1-3H3;1H/q+1;/p-1
• InChIKey: YPGZWUVVEWKKDQ-UHFFFAOYSA-M
• SMILES: CCCCCCCCCCCCCCCCN(CCCCCCCCCCCCCCCC)C1=CC=C(C=C1)/C=C/C2=CC=[N+](C=C2)C.[I-]

4-Di-16-ASP (Cat No.:M021317) is a lipophilic fluorescent dye used primarily for membrane staining and tracking neuronal activity. As a member of the styryl dye family (DiASP dyes), it integrates into lipid bilayers and exhibits strong fluorescence in the visible spectrum, making it ideal for labeling plasma membranes and monitoring membrane potential changes. 4-Di-16-ASP is widely applied in neuroscience, cell biology, and live-cell imaging, offering long-term retention and high photostability. Its hydrophobic structure supports selective staining of neuronal processes, including axons and dendrites, without crossing into the cytoplasm.