RNase A, 5 mg/mL, 2 mLEfficiently degrade unwanted RNA in DNA preparations and other samples. Product information Ribonuclease A (RNase A) is an endoribonuclease that cleaves single stranded RNA at the 3 end of pyrimidine residues, forming oligoribonucleotides having 3 terminal pyrimidine 3 phosphates. Pyrimidine 3 monophosphates are also released by RNase A cleavage of adjacent pyrimidine nucleotides. Modified RNA containing pyrimidine 2 fluoro dNMPs, such as DuraScript