Cyanuric acid, identification

The identification of residues of triazine herbicides has been attempted by reaction and dansylation [190]. The triazines are hydrolyzed to cyanuric acid and alkylamines according to the following equation [191] ... 

Melanine, ammelide and cyanuric acid were not detected in the HCOOH extracts and the identification of s-triazines previously reported does not prove that s-triazines are indigenous. This kind of compound can easily be formed during the experimental and analytical procedures. Nevertheless, this last conclusion is not definitive. As pointed out by Stoks and Schwartz33, the carbonaceous chondrites are far from homogenous. Important variations from sample to sample exist, even if all these samples are fragments of the same chondrite. Moreover, and as previously reported, the sample treatment is of prime importance. It can lead to the formation of secondary products or liberate molecules unobservable after milder treatment. To conclude, it seems clear that nitrogen heterocycles are present in carbonaceous chondrites and that pyrimidine derivatives are less abundant than purine derivatives. 

Pyrolysis has also led to the tentative identifications of the nitrogen heterocychcs, cyanuric acid (Studier et al, 1972), and alkylpyiidines (Hayatsu et al, 1977) in the Murchison macromolecular material. Similar types of analyses have revealed acetonitrile and benzonitrile (Levy et al, 1973 Holtzer and Oro, 1977). Substituted pyridine, quinoline, and carbazole were observed in sodium dichromate oxidation of the macromolecular material (Hayatsu et al, 1977). 

Raoul S, Cadet J (1996) Photosensitized reaetion of 8-oxo-7,8-dihydro-2 -deoxyguanosine. identification of l-(2-deoxy-beta-D-er54hro-penofuransoyl)cyanuric acid as the major singlet oxygen oxidation product. J Am Chem Soe 118 1892 1898... 

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