2′ O-Methyl RNA is a more stable form of RNA with similar properties. It has the same low rate of depurination, but it is protected against base hydrolysis. 2′ OMe RNA is chemically more stable than RNA as well, and allows for greater flexibility in conjugation schemes.
2′ O-Methyl RNA:RNA duplexes are the most stable. RNA:RNA and DNA duplexes have lower melting temperatures. 2′ OMe RNA is most commonly used in therapeutic applications due to its nuclease resistance.