WST-1 是一种水溶性四唑盐。WST-1 诱导细胞内线粒体脱氢酶进行 NADH 依赖的酶切反应，释放出水溶性的甲臜产物。WST-1 可用于细胞增殖与细胞毒性检测，通过测定 450 nm 处的吸光值来反映细胞活力。

Humic acid is a compound formed by microbial decomposition of plant and animal remains and is widely found in mountains, rivers and lakes.Humic acid enhances the degradation of pyrene by Mycobacterium smegmatis NJS-1.Humic acid inhibits the formation of Microcystis aeruginosa colonies at high iron levels.

1,3,5-三甲基-1H-吡唑-4-羧酸是在 Cinachyrella sp. 中发现的海洋衍生天然产物。