nmr常见溶剂和杂质氢谱和碳谱化学位移
7512 J . Org. Chem. 1997, 62, 7512-7515NMR Ch em ica l Sh ifts of Com m onLa bor a tor y Solven ts a
nmr常见溶剂和杂质氢谱和碳谱化学位移