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研究了标题化合物的红外吸收光谱，阐明了由于３－甲硫基－５－取代伯胺基－１，２，４－三嗪－６－羧酸衍生物（ＩＩ～ＩＶ）能够形成分子内氢键，致使６位碳上相连羰基的红外吸收峰值向低波数移动约３０～８０ｃｍ－１。
The infrared absorption spectrum of the title compound was studied to clarify that since the 3-methylthio-5-substituted primary amino-1,2,4-triazine-6-carboxylic acid derivatives (II to IV) Bond, resulting in carbon carbonyl carbonyl attached to the 6-position infrared absorption peak shift to a low wave number of about 30 ~ 80cm-1.