What is the difference between n-valeric acid and isovaleric acid? What’s the difference?

Properties and uses of n-valeric acid ［Alias］Valeric acid,ValerianOxalic acid, andrographis oxalic acid. ［Molecular Formula］C5H10O2 ［Structural Formula］CH3(CH2)3COOH [Properties]N-valeric acid is a co…