Table 2. Masses and structures of the main fragments of the four antipyrine derivatives [18]

From

The Analgesic Metamizole (Dipyrone) and Its Related Products Antipyrine, 4-Aminoantipyrine and 4-Methylaminoantipyrine. Part 1: Mass Spectrometric and Electrochemical Detection

Achim Habekost

World Journal of Chemical Education. 2018, 6(3), 134-144 doi:10.12691/wjce-6-3-6