p. 6091 - 6094
(2007/10/03){[{2-[(Hydroxy-methyl-phosphinoylmethyl)-(toluene-4-sulfonyl)-amino]-ethyl}-(toluene-4-sulfonyl)-amino]-methyl}-methyl-phosphinic acid
C20H28Cl2N2O6P2S2
[3-(Ethoxy-methyl-phosphinoylmethyl)-imidazolidin-1-ylmethyl]-methyl-phosphinic acid ethyl ester
({2-[(Hydroxy-methyl-phosphinoylmethyl)-amino]-ethylamino}-methyl)-methyl-phosphinic acid