... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > organonitrogen compound > nitrogen mustard > phosphoramide mustard

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organonitrogen compound > nitrogen mustard > phosphoramide mustard

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > amide > primary amide > phosphoramide > phosphorodiamide > phosphoramide mustard