2-正辛基噻吩, 2-n-Octylthiophene

油红 O, Oil Red O

无水乳清酸, Orotic acid

2-氧杂-6-氮杂螺[3.4]辛烷, 2-Oxa-6-azaspiro[3.4]octane

草酸二水合物, Oxalic acid dihydrate

氧杂环丁烷-3-羧酸, Oxetane-3-carboxylic acid

3-羰基环戊烷羧酸, 3-Oxocyclopentanecarboxylic Acid

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

钯,5%负载于碳酸钙,Type A306060-5,铅毒化, Palladium,5% on calcium carbonate

钯,5% 负载于活性炭浆料, Palladium,5% on activated carbon paste