1,2,3-Butanetricarboxylic acid, 3-hydroxy- 3-Carboxy-2,3-dideoxy-4-C-methylpentaric acid 3-Hydroxy-1,2,3-butanetricarboxylate 6061-95-6 DL-threo-alpha-Methylisocitrate alpha-Methylisocitrate threo-alpha-Methylisocitrate