| 52775-76-5 | methylenomycin A | C9H10 O4 |
| 52775-02-7 | 1-Azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-amino-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-, diphenylmethyl ester, trans- | C24H24N6O3S |
| 52775-06-1 | 1-Azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[(acetyloxy)methyl]-7-methoxy-8-oxo-7-[(2-thienylacetyl)amino]-, phenylmethyl ester, cis- | C25H26N2O7S |
| 52775-40-3 | 1-Oxacefamandole | C18H18N6O6S |