五碳糖 Traditional form: 五碳糖 Pinyin (reading): wǔtàntáng Definitions: pentose (CH2O)5, monosaccharide with five carbon atoms, such as ribose 核糖 (hétáng) Characters: 五 - five; surname 碳 - carbon 糖 - candy, sugar, sweets Traditional characters: 五 - five; surname 碳 - carbon 糖 - candy, sugar, sweets