
The D5405 DNA Standard Set by Zymo Research contains three sequence-identical 897 bp dsDNA standards at 50 ng/µl (2 µg each): unmodified cytosine (D5405-1), 5-methylcytosine (D5405-2), and 5-hydroxymethylcytosine (D5405-3). Ideal reference controls for HPLC, LC/MS, and TLC cytosine modification quantitation studies.