Bergenin
Bergenin98%
[plant origin]: Saxifragaceae phytoliths cabbage entire grass, thick leaf crag cabbage myrsinaceae plant ardisia crispa root, stem, leaf.
[structural formula]
[molecular formula and molecular weight] C14H16O9,328.28
[physical property] this for white loose acicular crystallization or crystalline powder; Odourlessness, taste pain; Meets the light or hot gradually changes color.this dissolves in the methyl alcohol, in water or ethyl alcohol slightly soluble.
melting point: Takes this, after 130℃ dry, determines (the appendix legallyⅦ C), the melting point is 232~ 240℃.
ratio curls: Takes this, the precise name decides, adds the methyl alcohol to make each 1ml including the 20mg solution, determines (the appendix legallyⅦ E), according to the dry computation, the ratio curls for - 38° to - 45°.