Abstract
Calf thymus deoxyribonucleic acid (DNA) was subjected to pyrolysis as 1 × 10 −7 atm and 220–250°C. The sublimate was collected and its composition was examined by thin-layer chromatography and mass spectrometry. It contained, inter alia, three of the four major DNA bases, a bis-methylfuranyladenine, two mono-methylfuranyladenines and a methylfuranyleytosine. The recovery of the sublimate, as a percentage of the total of each present in the DNA, was: adenine, 27%; cytosine, 40%; thymine, 60%. The mass spectrum of the sublimate was compared with that obtained directly from DNA.
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