Изомерами являются

• \(CH_3CH_2CH_2OH\) и \(CH_3CH_2OH\)

• \(CH_3CH_2CH_2OH\) и \(CH_3CH_2OCH_3\)

• \(CH_3CH_2CH_2COOH\) и
  \(CH_3CH_2COOH\)

• \(CH_3CH_2COOH\) и \(CH_3CH_2CH_2OH\)