Synonyms: Benzenepropanoicacid, a-hydrazino-3,4-dihydroxy-a-methyl- (9CI); Hydrocinnamicacid, a-hydrazino-3,4-dihydroxy-a-methyl- (7CI,8CI);DL-3-(3,4-Dihydroxyphenyl)-2-hydrazino-2-methylpropionic acid; DL-Carbidopa;DL-a-Hydrazino-3,4-dihydroxy-a-methylhydrocinnamic acid; DL-a-Hydrazino-a-methyl-3,4-dihydroxyphenylpropionicacid; DL-a-Hydrazino-a-methyl-b-(3,4-dihydroxyphenyl)propionicacid; DL-a-Hydrazino-a-methyldopa; DL-a-MDH; NSC 92521; dl-MK 485; dl-a-Methyl-a-hydrazino-3,4-dihydroxyphenylpropionicacid; a-Hydrazino-a-methyl-3,4-dihydroxyphenylpropionicacid; a-Hydrazino-a-methyldopa; a-MDH; a-Methylhydrazinodopa; b-(3,4-Dihydroxyphenyl)-a-hydrazino-a-methylpropionic acid; b-(3,4-Dihydroxyphenyl)-a-methyl-a-hydrazinopropionic acid