at 175 degrees and the hydrolysate is chromatographed on paper with propan-2-ol-2n-hydrochloric acid , in addition to expected ultraviolet-absorbing spots corresponding to guanine , adenine , cytosine and thymine , an ultraviolet-absorbing region with r ( f ) similar to that of uracil can be detected .
C0040087
thymine
C0041917
uracil