1,2,4-Butanetricarboxylic acid, 2-phosphono- 2-PHOSPHONOBUTANE-1,2,4-TRICARBOXYLIC ACID 2-Phosphono-1,2,4-butanetricarboxylic acid 2-Phosphonobutane-1,2,4-tricarbonic acid 37971-36-1 40372-66-5 94386-13-7 Butanetricarboxylic acid, 2-phosphono-1,2,4- EINECS 253-733-5