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Substance Name: DNA
RN: 9007-49-2


  • A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).

Molecular Formula

  • C15-H25-O13-P2-R3

Molecular Weight

  • 475.2975

Classification Code

  • Mutation Data
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Names and Synonyms

Name of Substance

  • Deoxyribonucleic acid
  • DNA

MeSH Heading

  • DNA


  • Calf thymus DNA
  • Desoxyribose nucleic acid
  • DNA
  • Nucleic acids, deoxyribo

Systematic Names

  • Deoxyribonucleic acid
  • Deoxyribonucleic acids

Registry Numbers

CAS Registry Number

  • 9007-49-2

System Generated Number

  • 0009007492

Structure Descriptors




Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD intraperitoneal > 1500mg/kg (1500mg/kg)   Annals of the New York Academy of Sciences. Vol. 60, Pg. 251, 1954.