Super Fluor 647, SE is a reactive dye for the labeling of antibodies, peptides, proteins, tracers, and amplification substrates optimized for cellular labeling and detection. Super Fluor 647 dye molecules can be attached to proteins at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection.

Alexa fluor 647和Cy5的光谱及滤光片已匹配。在与大多数蛋白质、寡核苷酸和核酸结合时，Alexa fluor 647辅助抗体偶联物的总荧光强度超过了其他公司Cy5偶联化合物。相较于Cy5，Alexa fluor 647在相同置换度下发射的荧光更强，这是因为其荧光吸收光谱极其微小。