Urocanic acid (4-Imidazoleacrylic acid), synthesized in the epidermis, functions as a primary absorber of ultraviolet (UV) radiation in mammalian skin.

Imidazoleacetic acid hydrochloride (I4AA) is an imidazole derivative with potential antituberculosis properties. It also used in the preparation of acyl guanidine inhibitors of β-secretase.

Pyraclostrobin (Standard) is the analytical standard of Pyraclostrobin, primarily used for biochemical research and quantitative analysis. Pyraclostrobin is a potent, broad-spectrum fungicide. It exerts its biological effects by activating the AMPK/mTOR signaling pathway, which leads to the induction of oxidative DNA damage, mitochondrial dysfunction, and autophagy.

Thiamine hydrochloride (Standard) is the analytical standard of Thiamine hydrochloride, primarily used for quantitative analysis and metabolic research. Thiamine hydrochloride (Vitamin B1 hydrochloride) is an essential micronutrient that serves as a vital cofactor for several central metabolic enzymes, including pyruvate dehydrogenase, α-ketoglutarate dehydrogenase, and transketolase. In vivo, it is phosphorylated into its active form, Thiamine Pyrophosphate (TPP), which is directly involved in carbohydrate metabolism, the TCA cycle, and the pentose phosphate pathway. It is indispensable for cellular energy production and the maintenance of nervous system integrity.

Fluconazole (Standard) is the standard substance of Fluconazole, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Fluconazole is a triazole antifungal agent that is used to treat oropharyngeal candidiasis and cryptococcal meningitis in AIDS.