American Society of Hematology

Fig. 1.

$Fig. 1. Structural formulae for the three compounds determined by MS and H1- and C13-NMR analysis of purified fractions. C1, N, N′-Dibutyl-thio-4,5-imidazolindion (MW = 242); C2, N, N′-Dibutyl-4,5-dihydro-5-hydroxy-5-ethoxy-4-oxo-2-thiouracil (MW = 316); C5 was identified as a highly photosensitive intermediate product with the proposed structure shown above.$

Structural formulae for the three compounds determined by MS and H¹- and C¹³-NMR analysis of purified fractions. C1, N, N′-Dibutyl-thio-4,5-imidazolindion (MW = 242); C2, N, N′-Dibutyl-4,5-dihydro-5-hydroxy-5-ethoxy-4-oxo-2-thiouracil (MW = 316); C5 was identified as a highly photosensitive intermediate product with the proposed structure shown above.

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