Vari Fluor 640 SE

• CAT Number: I041362
• Purity: ≥95%

Vari Fluor 640 SE（Cat No.:I041362）is a fluorescent dye that emits in the far-red spectrum, with an excitation peak around 640 nm and an emission peak around 660 nm. The “SE” indicates that it is a succinimidyl ester, which allows the dye to react with amine groups on biomolecules like proteins, peptides, or antibodies for conjugation. It is commonly used in applications such as fluorescence microscopy, flow cytometry, and immunoassays. The far-red emission provides better tissue penetration and less background fluorescence, making it ideal for high-resolution imaging and sensitive detection in biological research.