In the monosaccharide derivatives known as sugar alcohols, the carbonyl oxygen is reduced to a hydroxyl group. For example D-glyceraldehyde can be reduced to glycerol. However, this sugar alcohol is no longer designated D or L

在单糖衍生为糖醇中,羰基氧还原为羟基。例如D-甘油醛可以还原为甘油,此糖醇不在标记为D或L

属类：化学及生命科学-化学-化学习题

They react by adding other chemical agents at the double bond to form derivatives or polymers.

这些化合物的最大用途在于双键与其它化学物质的反应。

属类：化学及生命科学-化学-

The melting temperatures of these derivatives are easily determined and are characteristic for each osazone.

这些衍生物的熔点温度很容易确定,而且对每一种(苯脎)衍生物是特征性的。

属类：化学及生命科学-化学-化学习题

These derivatives are readily obtained by alkylation of 2-mercaptopyridine and alkyl halides under alkaline conditions

这些衍生物可以容易地在碱性条件下通过2-巯基吡啶和卤代烷的烷基化而得到。

属类：综合句库--

These derivatives appear to undergo primary ??dissociation of a metal-phosphorus bond

这些衍生物似乎主要发生金属--磷键的?舳狭选?/UK>

属类：综合句库--

Esters are named as derivatives of the acids from which they are derived

酯是作为相应的酸的衍生物来命名的。

属类：综合句库--

TMs occurs primarily in the liver, where they are converted to unstable derivatives .

致癌性突变主要发生在肝脏中,在这里他们被转变成不稳定的衍生物。

属类：工程技术-食品工程-

centralite and its derivatives ,and salts thereof

中定剂及其衍生物,和它们的盐类

属类：物品名称-化工产品-

The damping derivatives can only be determined experimentally in the wind tunnel or ballistic range

阻尼导数只能用风洞或弹道试验来确定。

属类：综合句库--

The simplest member, pyrimidine itself (C4H4N2), is not common, but derivatives with the structure are. Examples include thiamine (vitamin B1), several sulfa drugs, barbiturates, and three of the bases in nucleic acids (cytosine, thymine, and uracil).

最简单的成员是嘧啶本身(C4H4N2)。嘧啶不常见,但带这种环结构的衍生物很普遍,如硫胺素(维生素B1)、若干种磺胺药、巴比妥酸盐以及核酸中的三种基(胞嘧啶、胸腺嘧啶和尿嘧啶)。

属类：化学及生命科学-化学-