A particular kind of matter with uniform properties.
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(3R,4R)-Benzyl 4-(tert-butoxycarbonylamino)-3-hydroxypiperidine-1-carboxylate
6-(2-Carboxy-6-methoxy-benzyl)-5-ethoxy-3,4-dihydro-1H-naphthalene-2,2-dicarboxylic acid diethyl ester
