Quantum chemical calculations of gossypol and thymine reveal that the net electronic charge distributions along the boldfaced line of their structural formula (Fig. 2) are just opposite in sign.
量子化学计算棉酚与胸腺嘧啶分子中的净电荷分布，发现沿两者结构式粗线上各原子的电荷恰好符号相反（图2）。
Structural adhesive primer cured at high temperature was introduced in terms of its formula, process, compatibility with adhesive, chemical resistance, ageing resistance, etc.
研制了一种高温固化结构胶粘剂底胶。介绍底胶的配方、工艺、与主体胶粘剂的匹配性及耐介质、耐老化性能。
Product Name: Methyl trimethoxysilane Other Name: MTMS Chemical structural formula: Property: Colorless transparent liquid.
用途：产品名称：甲基三甲氧基硅烷分子结构式：性状：无色透明液体。
Product Name: Methyl triethoxysilane Other Name: MTES Chemical structural formula: Property: Colorless transparent liquid.
用途：产品名称：甲基三乙氧基硅烷分子结构式：性状：无色透明液体。
The raceme, the (R)-isomer and the (S)-isomer are identical in chemical structural formula but different in stereostructure and optical rotation performance.
外消旋体、（R）-异构体和（S）-异构体具有相同的化学结构式，具有不同的立体结构和旋光性能。
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
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