荧光素二乙酸酯是一种细胞可渗透的酯酶底物。 Fluorescein diacetate 可用作 hGSTP1-1 的荧光底物。

二苯四嗪是一种生物发光化合物。二苯四嗪单独产生的背景非常少，具有出色的信号背景比。此外，二苯四嗪在毫摩尔浓度下引起的细胞毒性最小。将二苯四嗪注射到未转染的 BALB/c 小鼠中不会产生任何背景发射。

α-Neoendorphin (1-8) is a 8-amino acid peptide derived from the N-terminal of α-Neoendorphin. α-Neoendorphin is an endogenous opioid peptide and is a part for the neoendorphins which are a group of endogenous opioid peptides derived from the proteolytic cleavage of prodynorphin isolated from procine hypothalmus and pituitary.