2-N-Butylthiophene

2-Oxo-2,3-dihydro-1,3-benzoxazole-6-sulfonyl chloride

2-Phenyl-4-(trifluoromethyl)thiazole-5-carboxylic acid

2-Propionylpyrrole

2-Pyrrolidin-2-yl-1H-indole

2-Trifluoromethylthioxanthone

2-三氟甲基噻吨酮

2,2-Difluoro-1-methylcyclopropanol

2,2,2-Trifluoroethyl chloroformate

2,3-Dihydro-1H-indene-2-thiol

2,3-Dimethylcyclohexanone

2,3,4,9-Tetrahydro-1H-carbazole-6-carboxylic acid

2,4-Difluoro-N-(2-propynyl)benzamide

2,4,6-Trifluorobenzyl bromide

2,6-Difluorocinnamic aldehyde

2,7-Naphthalenedisulfonyl dichloride