DNase I Synonyms: Deoxyribonuclease I, Deoxyribonucleate 5'-oligonucleotido-hydrolase, Pancreatic deoxyribonuclease, Thymonuclease CAS No.: 9003-98-9 EC No.: 3.1.21.1 DNase I is a white or slightly yellow powder or buffered aqueous solution obtained from bovine pancreas. It is an endonuclease that cleaves single- and double-stranded DNA and chromatin. Jiagen Biotechnologies supplies quality DNase I of various specifications. To place an order or for more information, please contact us at sales@jiagen.com.