81225-32-3
(5R,6S)-6-<(1R)-hydroxyethyl>-2-(3-aminopropan-1-yl)-2-penem-3-carboxylic acid
81225-26-5
(5R,6S)-6-<(1R)-hydroxyethyl>-2-(2-aminoethyl)-2-penem-3-carboxylic acid
81225-25-4
p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-(2-p-nitrobenzyloxycarbonylaminoethyl)-2-penem-3-carboxylate
81225-24-3
p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-(2-p-nitrobenzyloxycarbonylaminoethyl)-2-penem-3-carboxylate
81274-98-8
(5R,6S)-6-<(1R)-hydroxyethyl>-2-(4-aminobutan-1-yl)-2-penem-3-carboxylic acid