D-Luciferin Free Acid is a bioluminescence substrate formulated for high-sensitivity detection in a range of biochemical assays. When oxidized by luciferase, D-Luciferin emits light, making it a valuable tool for detecting ATP levels, measuring cellular activity, or assessing enzyme activity. This 100mg product is designed for use in laboratories where precise and sensitive measurements are required. It is commonly used in applications involving molecular biology, microbiology, and cellular research, providing excellent luminescence signals for quantification and assay development in high-throughput systems.