.beta.-Chloro-.alpha.,.alpha.-dimethylpropionic acid .beta.-Chloropivalic acid 13511-38-1 3-Chloro-2,2-dimethylpropionic acid 3-Chloropivalic acid Chloropivalic acid Chlorotrimethylacetic acid NSC89696 Propanoic acid, 3-chloro-2,2-dimethyl- Propionic acid, 3-chloro-2,2-dimethyl-