||It has been suggested that this article be merged with Methyl group, Ethyl group and Butyl to Alkyl. (Discuss) Proposed since January 2013.|
In organic chemistry, propyl is a linear three-carbon alkyl substituent with chemical formula -C3H7. It is the substituent form obtained by removing one hydrogen atom attached to the terminal carbon of propane. A propyl substituent is often represented in organic chemistry with the symbol Pr (not to be confused with the element praseodymium).
Linear propyl is sometimes termed normal and written with a prefix n- (i.e., n-propyl). However, n- is redundant because the absence of any prefix implies an unbranched propyl.