1-Methylxanthine is a caffeine derivative. 1-Methylxanthine is an essential human urinary metabolite of caffeine and theophylline (1,3-dimethylxanthine, TP).

1-Methylguanosine is a methylated nucleoside. It is known that some modified, especially methylated, nucleosides originating from RNA degradation are excreted in abnormal levels in the urine of patients with malignant tumors.

(R)-3-Hydroxybutanoic acid sodium ((R)-3-Hydroxybutyric acid) is a chiral precursor that can be used to synthesize biodegradable PHB and its copolyesters. (R)-3-Hydroxybutanoic acid sodium can be used as a nutrient in plants.