Chemical and Pharmaceutical Bulletin

Anticoccidials. VII. Synthesis of 4, 5-dihydro-5-oxo-2-pyrazinecarboxylic acid 1-oxides.

真野光彦， 瀬尾卓司， 今井欣一

Index: Chemical and Pharmaceutical Bulletin, , vol. 28, # 10 p. 3057 - 3063

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Citation Number: 4

Abstract

... 3060 Vol. ... PMR spectra were taken with a Varian T—60 or EM—390 spectrometer and chemical shifts are expressed in ppm, using tetramethylsilane as an ... was adjusted with concentrated HCl to pH 1. The precipitate was collected by filtration, washed with a small volume of cold ...