stevia is extracted from stevia leaf. Stevioside: 80%,90%, 95%, 98% Rebaudioside A : 40%, 60%, 80% ,90%,98%etc Stevia 1. Stevia Extract 2. Part of Used: Leaf 3. Active Ingredients: Stevioside, Renaudiside A, B, C, D, E, Dulcoside A, B 4. CAS No.: 57817-89-7 (Stevioside) 5. Specification Available: HPLC 80%-95% (Stevioside); 40%-98% (Rebaudioside-A) 6. Appearance: White Fine Powder Odor: Characteristic Application: 1. Applied in the food field, it is mainly used as a non-calorie food sweetener. 2. Applied in pharmaceutical field, stevioside is approved to use in medicine in 1992, and developing many new products in few years. 3. Applied in other products, such as beverage, liquor, meat, daily products and so on. As a kind of condiment, it also can play a preservative role to extend shelf-life.