4-Nitrobenzoic acid (4Nitrobenzoic acid) is a pharmaceutical intermediate often found in the production of folic acid, DABA, PABA and dyes.

Tyr-Leptin (26-39) (human)

β-紫罗酮是β-类胡萝卜素的端环类似物，广泛分布于水果和蔬菜中，具有抗增殖、抗转移作用。