1 ICN (S)-2-hydroxy-2,3-dimethylbutanenitrile 1.000 2 5Z9 (2r)-2-methyl-2-oxidanyl-butanenitrile 0.875 3 CNH 2-hydroxy-2-methylpropanenitrile 0.750 4 LEN 3-methylbutan-1-amine 0.750