hemiacetal

1. A monosaccharide sugar that contains the aldehyde group or is hemiacetal.
   葡萄糖醛酸基转移酶含有乙醛基或其半缩醛的单糖。
2. Any monosaccharide sugar that contains a ketone group or its hemiacetal.
   任何一种含有酮基或其半缩醛的单糖。
3. Pyranose is the major component of the polysaccharide in Marine Chlorella, with two glycoside configurations,α-hemiacetal hydroxy and β-hemiacetal hydroxy, coexisted.
   海水小球藻多糖组成单糖主要为吡喃糖，α半缩醛羟基和β半缩醛羟基两种糖苷构型共存；
4. The destruction of intramolecular hydrogen bond, hemiacetal formation and their kinetics for fluoro-containing β-diketone compounds in protonic solution have been studied by absorption and 'H NMR spectroscopy.
   本工作利用吸收光谱及核磁共振氢谱的方法对两种含&CF3基的β-二酮类化合物在质子溶剂中引起分子内氢键的破坏，缩醛化的发生及其动力学等进行了研究。
5. Application of bi-hemiacetal crosslinking agent BHA in fabric finishing
   双半缩醛交联剂BHA在织物整理中的应用

noun

1. an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones