The dataset also included liquid chromatography-mass spectrometry (LC-MS) data collected at 30-minute intervals to determine the conversion of the reaction. The peaks were assigned by their molecular weights. Specifically, these were benzophenone hydrazine (starting material), the product, and an impurity from hydrazine reacting with IPA which was identified by H NMR (Figure in the Supplementary Information). All the monitored reaction components contain the highly conjugated phenylhydrazone group. Therefore, it was expected their UV absorbance coefficients would be similar enough to allow the percentage area of the peak integrals to be directly compared and used for monitoring reaction progression.