(2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoic acid;hydrate; (-)-l-alpha-Hydrazino-3,4-dihydroxy-alpha-methylhydrocinnamicacidmonohydrate;Benzenepropanoicacid,alpha-hydrazinyl-3,4-dihydroxy-alpha-methyl-,hydrate,(alphaS);Benzenepropanoicacid,alpha-hydrazino-3,4-dihydroxy-alpha-methyl-,monohydrate,(S);Carbidopamonohydrate