Protein kinase inhibitor 9 (Compound example 175) 是一种抑制丝氨酸/苏氨酸和酪氨酸激酶活性的化合物。Protein kinase inhibitor 9 可用于研究癌症、过度增殖性疾病、类风湿性关节炎、免疫系统疾病、移植排斥和炎症性疾病。

SBI-0087702 促进黑色素瘤细胞中ATF2的细胞质定位，并诱导ATF2转移至线粒体，导致线粒体膜完整性丧失和细胞凋亡增加。SBI-0087702 抑制黑色素瘤细胞的生长和运动，同时抑制PKCε对Thr52位点的ATF2磷酸化。

Ingenol 3-monobenzoate（Ingenol 3-benzoate）是一种有效的厌食诱导剂。该化合物能够结合并激活PKC（Ki=0.14 nM），进而抑制磷酸烯醇丙酮酸羧激酶的基因表达，此作用可以抑制糖异生并增加血液中的皮质醇水平，最终导致食物厌恶的生理反应。

D-erythro-Sphingosine-d7是D-erythro-Sphingosine的氘代物。D-erythro-Sphingosine (Erythrosphingosine) 是一种有效的p32激酶活化剂，EC50 值为 8 μM，并且它也能抑制蛋白激酶C (PKC)。

D-erythro-Sphingosine-13C2,d2 是氘代标记的 D-erythro-Sphingosine。它是一种高效的 p32 激酶活化剂，EC50 为 8 μM，并且能抑制蛋白激酶 C (PKC)。此外，D-erythro-Sphingosine (Erythrosphingosine) 还作为 PP2A 的激活剂。

Bryostatin 1 is a natural macrolide isolated from the bryozoan Bugula neritina and is a CNS)permeable PKC modulator. Bryostatin 1 binds to the isolated C1 domain of Munc13-1 and the full-length Munc13-1 protein (Kis: 8.07 nM and 0.45 nM).

Cycloheterophyllin has an antioxidant effect, it is a photoprotective agent that inhibits ultraviolet A (UVA)-induced oxidative stress and damage, and could be used in the research on and prevention of skin photoaging.

N-Desmethyltamoxifen, the principal metabolite of tamoxifen in humans, serves as an efficacious modulator of ceramide metabolism within human AML cells by inhibiting ceramide glycosylation, hydrolysis, and sphingosine phosphorylation. Although it demonstrates weak antiestrogenic properties, it acts as a protein kinase C (PKC) inhibitor with a potency ten times greater than that of tamoxifen.

Cercosporin is produced by a plant pathogen, Cercosporakikuchii, and the elsinochromes. Cercosporin is a potent photosensitizer with a short activation wavelength. Cercosporin contains the perylene quinone structural features necessary for PKC activity (I