L-(-)-Fructose is the unnatural enantiomer of the common D-fructose sugar. As a specialty chemical, it is primarily used in scientific research, biochemical studies, and pharmaceutical development due to its unique metabolic properties. Unlike D-fructose, L-(-)-Fructose is not metabolized by human enzymes, resulting in zero caloric intake while offering comparable sweetness to sucrose (approximately 1.2-1.8 times sweeter). This makes it a promising non-nutritive sweetener for low-calorie foods, beverages, and products targeted at diabetics or weight management. It is also employed in metabolic research to investigate fructose-related pathways and as an intermediate in the synthesis of novel compounds. High-purity L-(-)-Fructose is essential for accurate experimental results in laboratory settings.