1H-Imidazole-4-sulfonyl chloride

2-[(3,5-Dimethyl-2H-pyrrol-2-ylidene)methyl]-3,5-dimethyl-1H-pyrrole monohydrochloride

3, 5, 3′, 5′-Tetramethyl-1H, 2′H-2, 2′-methanylylidene-bis-pyrrole hydrochloride

2-(2,4-Difluorophenyl)-5-(trifluoromethyl)pyridine

2-(Chloromethyl)benzoic acid

2-（氯甲基）苯甲酸

2-Acetylanthracene

2-乙酰基蒽

2-Aminomethyl-1,4-benzodioxane

2-氨甲基-1,4-苯并二噁烷

2-Bromo-1,10-phenanthroline

2-溴-1,10-菲咯啉

2-Bromo-5-methylbenzoic Acid

2-溴-5-甲基苯甲酸

2-Bromoquinoline

2-溴喹啉

2-Chloro-6-methylbenzaldehyde

2-氯-6-甲基苯甲醛