Table 1.

Different reaction conditions given to each reaction sample.

Reaction Sets	Description
Set 1: To each sample, 0.1 g Na4P2O7 and 0.5 g uridine were added to about 7–8 mL DI water and dissolved to form a clear solution. The reaction temperatures were kept at a range of 60–65 °C for about 5 days. The remaining description, regarding the additional materials added to each of the sample in set 1, is as follows:
Sample 1	0.1 g urea, 0.1 g magnesium sulphate, and 0.3 g white sand
Sample 2	0.1 g urea only
Sample 3	0.1 g magnesium sulphate only
Sample 4:	0.3 g white sand only
Sample 5	No additional material
Set 2: To each sample in this set, similar amounts of reactants were added as in set 2. However, the temperature window was 70–75 °C for about 5 days. The remaining description, regarding the additional materials added to each of the sample in set 2, is as follows:
Sample 6	0.1 g urea, 0.1 g magnesium sulphate, and 0.3 g white sand
Sample 7	0.1 g urea only
Sample 8	0.1 g magnesium sulphate only
Sample 9	0.3 g white sand only
Sample 10	No additional material