... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > organonitrogen compound > cyanine dye > pinacyanol cation

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organonitrogen compound > cyanine dye > pinacyanol cation

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic ion > organic cation > quinolinium ion > pinacyanol cation

... > chemical entity > molecular entity > ion > organic ion > organic cation > quinolinium ion > pinacyanol cation

... > chemical entity > molecular entity > ion > cation > organic cation > quinolinium ion > pinacyanol cation