methyl (2S)-2-(2-cyclohexylidenehydrazinyl)-3-(3,4-dihydroxyphenyl)-2-methylpropanoate; (S)-Carbidopa Methyl Ester N-Cyclohexylidene; (αS)-α-(2-Cyclohexylidenehydrazinyl)-3,4-dihydroxy-α-methylbenzenepropanoic Acid Methyl Ester; (S)-Methyl 2-(2-cyclohexylidenehydrazinyl)-3-(3,4-dihydroxyphenyl)-2-methylpropanoate; Carbidopa cyclohexylidene analog; Methyl (S)-2-(2-cyclohexylidenehydrazineyl)-3-(3,4-dihydroxyphenyl)-2-methylpropanoate (As per USP Commenting Opening 51(4)); Cyclohexylidene Carbidopa Methyl Ester