2-Nitro-1-naphthol

2-硝基-1-萘酚

2-Pentadecanone

2-十五烷酮

2,2′-Bithiophene-5-boronic acid pinacol ester

2,2'-联噻吩-5-硼酸频哪醇酯

2,2′:5′,2′′-Terthiophene

α-三联噻吩

2,2,2-Trifluoroethyl p-toluenesulfonate

2,2,2-三氟乙基对甲苯磺酸酯

2,3-Dibromomaleimide

2,3-二溴马来酰亚胺

2,3-Difluorotoluene

2,3-二氟甲苯

2,3,5-Trifluorobenzaldehyde

2,3,5-三氟苯甲醛

2,4-Dibromopyridine

2,4-二溴吡啶

2,4-Difluoro-α-(1H-1,2,4-triazolyl)acetophenone

2,4-二氟-α-(1H-1,2,4-三唑基)乙酰苯