4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[amino(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-, [2S-[2α,5α,6β(S*)]]-, compd. with N,N′-bis(phenylmethyl)-1,2-ethanediamine (2:1)

1,2-Ethanediamine, N¹,N²-bis(phenylmethyl)-, acetate (1:2)

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(acetyloxy)methyl]-7-[[(2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-8-oxo-, [6R-[6α,7β(Z)]]-, compd. with N,N′-bis(phenylmethyl)-1,2-ethanediamine (2:1)