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(1996)1,7-Bis-(4-methoxy-phenyl)-tetrahydro-[1,3,2]diazaphospholo[1,2-a][1,3,2]diazaphosphole 8-oxide
[1-(2-Chloro-ethyl)-3-(4-methoxy-phenyl)-2-oxo-2λ5-[1,3,2]diazaphospholidin-2-yl]-(4-methoxy-phenyl)-amine
2-[bis-(2-chloro-ethyl)-amino]-1,3-bis-(4-methoxy-phenyl)-2-oxo-2λ5-[1,3,2]diazaphospholidine-4,5-dione