油酸, Oleic Acid

乳清酸水合物, Orotic acid hydrate

6-氧代-1-氮杂螺[3.3]庚烷 半草酸盐, 6-Oxa-1-azaspiro[3.3]heptane hemioxalate

去甲斑蝥素, exo-7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic Anhydride

草酸, Oxalic acid

1,4-噻噁烷, 1,4-Oxathiane

2-氧杂丁烷甲醇, 2-Oxetanemethanol

4-羰基环己羧酸, 4-Oxocyclohexanecarboxylic Acid

4-(2-羰基-1-吡咯烷基)苯磺酰氯, 4-(2-Oxo-1-pyrrolidinyl)benzenesulfonyl chloride

钯,1%负载于氧化铝粉末, Palladium,1% on alumina powder