亚甲基

Hydrogen transfer, protonization and formation of methene bridge are probablely the main reasons for the above structural characters.

氢转移、质子化、亚甲基桥的形成可能是导致这些结构特征的主要原因。

Antioxidative effect of carotenoids on the methylene blue sensitized photoxidation of soybean oil and rapeseed oil was investigated.

采亚甲基蓝作光敏剂，研究了类胡萝卜素在豆油、菜油中的抗油脂光敏氧化作。

Thirteen new compounds of the alkyl styryl indoline spirobenzopyrans were synthesized from the condensation of 2-methylene indoline with the designed salicylaldehyde.

2-亚甲基吲啉和取代水杨醛缩得到十三种新的烷基苯乙烯基吲啉螺苯并吡喃。

Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.

本文报道了两种中位为苯并冠醚亚单元取代的含稠的硼-二吡咯亚甲基染料的成、光谱和电化学性质。

The deionizing and deoxidizing water is required by the methylene blue spectrophotometric method in the new national standard to analyze sulfide in water and waste water.

在新颁国标中，采亚甲基蓝光度法测定水和废水中硫化物时，要求去离子除氧水做为实验水。

The biruet can develop the color with the cupric sulfate in the alkaline solution, we call that the biruet reaction.Malonyl urea has acidity, so we call it barbituric acid.

巴比妥酸本身无镇静催眠作，当它的五位亚甲基上的两个氢被烃基取代后才呈现镇静催眠的生理活性，是一类对中枢神经系统起抑制作的化物。