|Section2= |Section3= }} Ribose, primarily occurring as D-ribose,'s an organic compound that occurs widely in nature. It's an aldopentose, that's a monosaccharide containing five carbon atoms that, in its acyclic form, has an aldehyde functional group at one end. Typically, this species exists in the cyclic form, as depicted in the upper right. It was first reported in 1891 by Emil Fischer. It comprises the backbone of RNA, a biopolymer that's the basis of genetic transcription. It's related t… (More on Ribose)