1-methyl-2-phenyl-3H-1,2λ⁵-benzazaphosphole 2-oxide

[2-(methylamino)phenyl]methyl-phenylphosphinic acid

(2-aminophenyl)methyl-phenylphosphinic acid

2-phenyl-1,3-dihydro-1,2λ⁵-benzazaphosphole 2-oxide