萘醌

A series of novel dendrons with 1,3,5-triazine structure were synthesized by convergent strategy using cyanuric chloride, p-hydroxyazobenzene,β-naphthol, 1-hydroxyanthraquinone, 3,5-dihydroxybenzyl. They were the first generation p-phenyl-azo-phenyloxy-terminated dendron G1.0, the first generation naphthyloxy-terminated dendron G1.0, the first generation naphthyloxy-terminated and 1-anthraquinonoxy-cored dendron G, and the second generation naphthyloxy-terminated dendron G2.0.

以对羟基偶氮苯、β-萘酚为端基，三聚氯氰、3，5-二羟基苄醇为支化单体，1-羟基蒽醌为核心，用收敛法合成了一系列新型结构的含均三嗪环的树枝块：第一代端基为偶氮苯的树枝块G1.0、端基为萘氧基的树枝块G1.0、端基为萘氧基、中心为蒽醌的树枝块G、第二代端基为萘氧基的树枝块G2.0。

Stable Vitamin K 3 is synthesized by addition reaction of raw materials of niacinamide, chlorhydric acid and menadione sodium bisulfite at 25℃.

以烟酰胺、盐酸为原料，在 2 5℃反应得烟酰胺盐酸盐溶液，而后与亚硫酸氢钠甲萘醌发生加成反应，反应的物料配比为：n ∶ n ∶ n =1∶1.2 ∶1.2 5 ，得到稳定的复合维生素K3 ，收率 95 %。

A complex chromogenic reaction of Cu2+ and 5, 8-dihydroxy-1, 4-na phthoquinone has been studied.

研究了Cu2+和5，8-二羟基-1，4-萘醌的络合显色反应。

The article presented the progress of image reversal components composing napthoquinone diazide compounds.

本文对含重氮萘醌化合物的翻转成像体系作了详细的总结。

METHODS:The content of the total naphthoquinone was counted in L-shikonin ,methanol was used as solvent and the wavelength was set at516nm.

总萘醌的含量以左旋紫草素计，溶剂为甲醇，检测波长为516nm。

Naphthoquinone derivative ; cytotoxicity ; apoptosis ; human nasopharyngeal cancer cell

紫草萘醌类衍生物；细胞毒作用；细胞凋亡；人鼻咽癌细胞

Synthesized polymerizable photosensitive monomer diazo naphthoquinone sulfonate hydroxyethyl methacrylate ether was characterized by infrared spectroscopy and 1H NMR.

田丰，于媛媛，汪长春*摘要：利用红外光谱和核磁共振(1H NMR)对所制备的光敏可聚合单体重氮萘醌苯磺酸甲基丙烯酸羟乙酯进行了表征。

Procaine hydrochloride, ampicillin sodium and dapsone can react with 1,2-naphthoquinone-4-sulfonic acid to form salmon pink compound, respectively. Their maximum absorption wavelengtb.es were shifted from the range of ultraviolet to the visible light.

利用分光光度法研究了抗生素类药物氨苄西林钠，抗麻风病药物氨苯砜，局部麻醉药盐酸普鲁卡因与1，2—萘醌—4—磺酸钠的显色反应，建立了灵敏简便的分光光度法。

In addition, pretreatment of Hepa1c1c7 cells with XH significantly inhibited menadione-induced DNA single-strand breaks.

另外，带有黄腐酚的Hepa1c1c7预处理细胞可很好地抑制甲萘醌诱导DNA单链断裂。

MicroM. In addition, pretreatment of Hepa1c1c7 cells with XH significantly inhibited menadione-induced DNA single-strand breaks.

另外，带有黄腐酚的Hepa1c1c7预处理细胞可很好地抑制甲萘醌诱导DNA单链断裂。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。