【谱图】有共振式的结构中活泼氢的位置

4-Hydroxy-1,5-naphthyridine [5423-54-1]
1H-1,5-naphthyridin-4-one [5423-54-1]
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4-hydroxy-1,5-naphthyridine in solution and in the solid state; it ... H NMR spectra (chemical shifts and spin ±spin ...

Naphthyridines. Structure, physicochemical properties and general methods of synthesis

http://www.iop.org/EJ/abstract/0036-021X/69/3/R02

自己下载吧。