A distinct structural unit within a molecule.
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(2S,4R)-1-(p-nitrobenzyloxycarbonyl)-2-hydroxymethyl-4-benzoyloxypyrrolidine
Acetic acid 4-bromo-1-phenyl-but-3-ynyl ester
O-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl)-(1-6)-O-(2,3,4-tri-O-acetyl-β-D-glucopyranosyl)-(1-6)-2,3,4-tri-O-acetyl-1-N-
Benzoic acid, 4-(3-oxo-1-pyrrolidinyl)-, methyl ester
(3R,2'S) N-(p-Methoxybenzyl)-3-(3'-acetoxy-2'-tert-butyldimethylylsiloxypropyl)-isoxazolidin-5-one
Acetamide, N,N-bis[2-(diphenylphosphino)ethyl]-
3,4-dimethoxy-2-nitro-benzyl alcohol
(Z)-4-(4-bromobenzylidene)-2-methyloxazol-5(4H)-one
m-(benzyloxycarbonyl)phenyl acetic acid
rac-N-(phenylsulfonyl)-alanine
