2-Hydroxy-1,3-xylyl-18-crown-5 、
<10-(p-aminophenoxy)-2,5,8-trioxadecyl>-15-crown-5 在
盐酸 、
sodium hydroxide 、 sodium nitrite 作用下,
生成 19-[4-(2-{2-[2-(1,4,7,10,13-Pentaoxa-cyclopentadec-2-ylmethoxy)-ethoxy]-ethoxy}-ethoxy)-phenylazo]-3,6,9,12,15-pentaoxa-bicyclo[15.3.1]henicosa-1(20),17(21),18-trien-21-ol