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(2007/10/03)2-(3-tert-butoxycarbonylamino-phenyl)-acrylic acid ethyl ester
2-(3-tert-butoxycarbonylamino-phenyl)-acrylic acid
3-(Boc-amino)phenylacetic acid ethyl ester
3-acetylsulfanyl-2-(3-tert-butoxycarbonylamino-phenyl)-propionic acid