5-氨基喹啉 、
(S)-3-Methylthio-1,5,10,10a-tetrahydrothiazolo[3,4-b]isoquinolinium iodide 以(S)-3-(quinol-5-yl-imino)-1,5,10,10a-tetrahydrothiazolo[3,4-b]isoquinoline (15.0 g) is obtained in the form of light beige crystals, m.p.=194° C.的产率得到(S)-3-(quinol-5-yl-imino)-1,5,10,10a-tetrahydrothiazolo[3,4-b]isoquinoline