- 对羟基苯甲酸酯 duìqiǎngjīběnjiǎsuānzhǐ parabenparaben; any of a group of compounds used as preservatives in pharmaceutical and cosmetic products
- 羟基丁酸 qiǎngjīdīngsuān GHBgamma-Hydroxybutyric acid; GHB
- 羟基磷灰石 qiǎngjīlínhuīshí hydroxyapatitehydroxyapatite, a calcium phosphate mineral that is the main inorganic component of bone and teeth
