Arbutin
Chemical name: (2R,3S,4S,5R,6S)-2-Hydroxymethyl-6- (4-hydroxyphenoxy)oxane-3,4,5-triol
CAS No.: 497-76-7
Molecular Formula: C12H16O7
Molecular Structure:
Description:
Arbutin is both an ether and a glycoside; a glycosylated hydroquinone extracted from bearberry plant in the genus Arctostaphylos. It inhibits tyrosinase and thus prevents the formation of melanin. Arbutin is therefore used as a skin-lightening agent. Arbutin is found in wheat, and is concentrated in pear skins.
Specification:
Test items | Specifications |
Appearance | White needle crystal or powder |
Assay(HPLC) | ≥99.5% |
Melting point | 202.0∽212.0℃ |
Clarity of water solution | Transparancy colorless,none suspended matters |
pH | 5.0-7.0 |
Specific optical rotation | [α]20D +174.0°～186.0° |
Loss on drying | ≤0.5% |
Heavy metal(ppm) | ≤20 |
Arsenic(ppm) | ≤2 |
Hydroquinone | Negative |
Total Plate count | ≤100CFU/g |
Packing & Storage:
