The present invention provides 6-acyl-2-O- α -D-glycosyl-L-ascorbic acid represented by the following general formula (3) and/or a composition comprising the compound and manufacturing methods thereof: (wherein, n represents an integer above 1, R represents a hydrocarbon group).本發明係提供下述通式(3)所示之6-醯基-2-O-α-D-糖基-L-抗壞血酸及/或含有該化合物之組成物以及該等之製造方法:(式中,n係表示1以上之整數,R係表示烴基)。