195000-93-2
(4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-3-((2R,3R,4R)-2-hydroxymethyl-4-methoxycarbonyl-oxetan-3-ylsulfanyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
195000-97-6
(4R,5S,6S)-3-((2R,3R,4R)-2-Dimethylcarbamoyl-4-hydroxymethyl-oxetan-3-ylsulfanyl)-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
195000-95-4
(4R,5S,6S)-3-((2R,3R,4R)-2-Azidomethyl-4-methoxycarbonyl-oxetan-3-ylsulfanyl)-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
195001-00-4
(4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-3-{(2S,3S,4R)-2-iodomethyl-4-[(4-nitro-benzyloxycarbonylamino)-methyl]-oxetan-3-ylsulfanyl}-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
195000-99-8
(4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-3-{(2R,3S,4R)-2-hydroxymethyl-4-[(4-nitro-benzyloxycarbonylamino)-methyl]-oxetan-3-ylsulfanyl}-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester