Synonyms:

alpha-arbutin;4-hydroquinone-alpha-d-glucopyranoside;a-Arbutin;Hydroquinone O-α-D-Glucopyranoside;4-Hydroxyphenyl a-D-glucopyranoside;(2R,3S,4S,5R,6S)-2-(HYDROXYMETHYL)-6-(4-HYDROXYPHENOXY)TETRAHYDROPYRAN-3,4,5-TRIOL;4-hydroxyphenyl alpha-D-glucopyranoside;Alpha bear

Canonical SMILES: C1=CC(=CC=C1O)OC2C(C(C(C(O2)CO)O)O)O

Density:1.556±0.06g/cm3(Predicted)

Boiling Point:561.6±50.0°C(Predicted)

Melting Point: 195-196°C

Storage: 2-8°C

PKA: 10.10±0.15(Predicted)

WGK Germany: 3

Appearance:White crystals or crystallized powder
Assay:99.5%min.
Identification-infrared Spectrum:In accordance with spectrum of standard α-Arbutin
PH:5.0-7.0
Melting Point:202°C~210°C
Optical Rotation:+175°~+185°
Loss on Drying:0.5% max.
Residue on ignition:0.5%max.
Transmittance:95%min. at 430nm
Hydroquinone:10ppm max.
Heavy Metal:10ppm max.
Total Bacteria:1000cfu/g max.
Yeast&Mold:100cfu/g max.
Escherichia coli:Negative
Staphylococcus aureus:Negative
Pseudomonas aerus:Negative