4-正辛基苯酚, 4-n-Octylphenol

正辛基三甲氧基硅烷, n-Octyltrimethoxysilane

3-辛炔-1-醇, 3-Octyn-1-ol

苔红素, Orcein

邻氨基苯磺酸, Orthanilic Acid

1-氧杂-6-氮杂螺[3.4]辛烷草酸盐, 1-Oxa-6-azaspiro[3.4]octane oxalate

草酰乙酸, Oxalacetic Acid

草酸, Oxalic acid

5-羧基唑, Oxazole-5-carboxylic acid

甲苯-4-磺酸氧杂环丁-3-基酯, 3-Oxetanyl p-Toluenesulfonate