4-epi-Chlortetracycline (hydrochloride) (Standard) is the standard substance of 4-epi-Chlortetracycline (hydrochloride), and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Chlortetracycline is an analog of tetracycline , a broad spectrum antibiotic. In addition to its actions against microorganisms, chlortetracycline suppresses inflammation by inhibiting neutrophil action and other aspects of the innate immune response. 4-epi-Chlortetracycline is an epimer of chlortetracycline.

Toltrazuril (Standard) 是 Toltrazuril 的标准品，适用于定量分析、质量控制及生化实验等相关研究。Toltrazuril (Toltrazurilo) 是一种抗原虫剂，对球虫亚纲有效。

Enoxastrobin (Standard) is the standard substance of Enoxastrobin, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Enoxastrobin is a reagent biochemical.

Dl-Proline-2-D1 (Standard) 是 Dl-Proline-2-D1 的标准品，适用于定量分析、质量控制及生化实验等相关研究。

MCPA-2-ethylhexyl ester (Standard)是MCPA-2-ethylhexyl ester的标准品，适用于定量分析、质量控制及生化实验等相关研究。

1,5-Pentane-1,1,5,5-D4-Diamine (Standard) 是 1,5-Pentane-1,1,5,5-D4-Diamine 的标准品，适用于定量分析、质量控制及生化实验等相关研究。