... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic hydroxy compound > polyol > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydroxides > organic hydroxy compound > polyol > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydroxides > organic hydroxy compound > polyol > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > hydroxides > organic hydroxy compound > polyol > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > organooxygen compound > carbohydrates and carbohydrate derivatives > carbohydrate > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > organochalcogen compound > organooxygen compound > carbohydrates and carbohydrate derivatives > carbohydrate > alditol > tetritol > butane-1,2,3,4-tetrol > threitol

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organochalcogen compound > organooxygen compound > carbohydrates and carbohydrate derivatives > carbohydrate > alditol > tetritol > butane-1,2,3,4-tetrol > threitol