https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Hydrocarbons/Alkanes https://chem.libretexts.org/Courses/Eastern_Mennonite_University/EMU%3A_Chemistry_for_the_Life_Sciences_(Cessna)/12%3A_Organic_Chemistry%3A_Alkanes_and_Halogenated_Hydrocarbons/12.02_Structures_and_Names_of_Alkanes