Synonyms: 4-Hydroxyphenyl-beta-D-glucopyranoside; p-Arbutin Molecular Formula: C12H16O7 Molecular Weight: 272.25 CAS Registry Number: 497-76-7 Melting point:198 ~ 201°C Appearance:White needle crystal or powder Assay:NLT 99.5% Usage:To efficiently beautiful skin can spot, soften skin, dispel the cui spot, age spot, melanin composure, acne and senile plaque.