1-(N-((7-Chloro-2-quinoxalinyl)carbonyl)-D-serine)-5-(N-((7-chloro-2-quinoxalinyl)carbonyl)-D-serine)triostin A 85502-73-4 Triostin A, 1-(N-((7-chloro-2-quinoxalinyl)carbonyl)-D-serine)-5-(N-((7-chloro-2-quinoxalinyl)carbonyl)-D-serine)-