... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > salt > organic salt > organic sodium salt > pyranine

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > alkali metal molecular entity > alkali metal salt > sodium salt > organic sodium salt > pyranine

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > salt > alkali metal salt > sodium salt > organic sodium salt > pyranine

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > alkali metal molecular entity > sodium molecular entity > sodium salt > organic sodium salt > pyranine