1,1-Dioxoisothiazolidine

2-Bromo-4-fluoropyridine

2-溴-4-氟吡啶

2-Ethynyl-α,α,α-trifluorotoluene

2-乙炔基-α,α,α-三氟甲苯

2-Hydroxypyrazine

2-羟基吡嗪

2-Methyloxazole-4-carboxylic acid

2-甲基噁唑-4-羧酸

2,2′-Dibromo-1,1′-binaphthyl

联萘二溴

2,3-Diamino-6-chloropyridine

2,4-Bis[4-(N,N-dibenzylamino)-2,6-dihydroxyphenyl]squaraine

2,5-Bis(bromomethyl)-1,4-bis(octyloxy)benzene

2,5-双(溴甲基)-1,4-双(辛氧基)苯

2,5-Difluorobenzenesulfonamide

2,5-二氟苯磺酰胺

25-Hydroxyvitamin D₃ Monohydrate

25-羟基维生素D₃ 一水合物