DN Wholesales Bulk Natural Birch bark extract Betulin 98% powder by HPLC

Hello.How much does 1 kg of betulin cost with delivery to the Russian Federation?What is his purity? Is there an NMR or other test that can confirm the concentration?
Product Name:Betulin
Certificate:ISO9001/Halal/Kosher/ISO22000
Shelf Life:3 Years
Sample:Avaliable
Storage:Cool Dry Place
MOQ:1 Kg
Particle Size:100% Pass 80 Mesh
Payment:TT Advance
Appearance:White Powder
Specification:98%
Form:Powder
Packaging:DRUM
Packaging:Vacuum Packed
Place of Origin:Shaanxi, China (Mainland)
Brand Name:DN
Type:Betulin
Grade:COSMETIC GRADE