BODIPY 581/591 NHS ester是一种具有优秀光学性质的荧光染料，常用于生物学研究中标记细胞表面抗原、细胞器、核酸等生物分子。其荧光发射峰位于长波长区域，能够有效地减少背景干扰，适用于荧光偏振测定和双光子激发显微镜检查。Ex/Em(nm)=581/591。
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