Molecular Formula of alpha-Arbutin (CAS NO.84380-01-8): C₁₂H₁₆O₇
Molecular Weight: 272.25
Melting point: 195-196 ^oC
Appearance: White needle crystal or powder
Index of Refraction: 1.65
Molar Refractivity: 63.84 cm³
Molar Volume: 174.9 cm³
Surface Tension: 73.4 dyne/cm
Density: 1.556 g/cm³
Flash Point: 293.4 °C
Enthalpy of Vaporization: 88.85 kJ/mol
Boiling Point: 561.6 °C at 760 mmHg
Vapour Pressure: 1.9E-13 mmHg at 25 °C
Structure of alpha-Arbutin (CAS NO.84380-01-8):
                   
Systematic Name: 4-Hydroxyphenyl alpha-D-glucopyranoside
SMILES: O(c1ccc(O)cc1)[C@H]2O[C@@H]([C@@H](O)[C@H](O)[C@H]2O)CO 
InChI: InChI=1/C12H16O7/c13-5-8-9(15)10(16)11(17)12(19-8)18-7-3-1-6(14)2-4-7/h1-4,8-17H,5H2/t8-,9-,10+,11-,12+/m1/s1 
InChIKey: BJRNKVDFDLYUGJ-ZIQFBCGOBP
Std. InChI: InChI=1S/C12H16O7/c13-5-8-9(15)10(16)11(17)12(19-8)18-7-3-1-6(14)2-4-7/h1-4,8-17H,5H2/t8-,9-,10+,11-,12+/m1/s1 
Std. InChIKey: BJRNKVDFDLYUGJ-ZIQFBCGOSA-N

 alpha-Arbutin (CAS NO.84380-01-8) has high whitening and sunscreen efficiency on the skin, and can reduce the pain of human gastro-intestinal diseases , and enhance the body's immune function.

Loss on drying：≤1.0%
The total number of bacteria：≤100 CFU/g
Fungi：≤50 CFU/g

 alpha-Arbutin , its cas register number is 84380-01-8. It also can be called 4-Hydroquinone-alpha-D-glucopyranoside ; and alpha-D-Glucopyranoside, 4-hydroxyphenyl .