红紫素与茜素一样,是茜草根制成的色素之一。20世纪20年代开始可以购得合成红紫素,它提供了一种紫色色淀(茜素紫),那时人们预计这种紫色色淀的色彩稳定性会超过茜素深红,因为此色淀的组成成份中多了一种羟基。然而,对画家来说,红紫素的永久性证明是不够的。
... 二氢卟吩e6单天门冬氨酸酰胺(N-aspartyl chlorin,Npe6) 红紫素(purpurin) 亚甲蓝(Methylene blue) ...
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... alizarin-carmine 茜素卡红 alizarinopurpurin 红紫素 alkal melting pan 碱熔锅 ...
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...:单天冬氨酞二氢卟啉(monoaspartyl-chlorin,MACE,又名Npe6)、脱镁叶绿素甲酯一酸(pheophribidea,Phda)、红紫素(purpurins)、四-(m-羟苯)二氢卟吩(tetra-m-hydrophenyl-chlorin,THPC).③金属肽菁类。④5-氨基酮戊酸(5-aminolevulinicacid,ALA).
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In this paper, the interaction of one complex (Cu(DAP)_2~(2+)) and two dyes(Nuclear fast red and purpurine) with DNA were investigated using electrochemicaland spectroscopic methods. The paper is made up of four parts.
本论文主要用电化学方法和光谱方法研究了一种配合物(氨基吩嗪铜)和两种染料(核固红、红紫素)与DNA的相互作用。
参考来源 - 氨基吩嗪铜配合物及染料小分子与DNA作用的电化学及光谱研究·2,447,543篇论文数据,部分数据来源于NoteExpress
合成的一系列红紫素-18酰亚胺衍生物具有长波长的紫外吸收。
A series of novel purpurin-18 imide derivatives with long absorption wavelength were synthesized through Wittig reaction of methyl pheophorbide-a.
在碱性条件下,通过空气氧化将E环转变为环己二羧酸酐形成红紫素18甲酯衍生物;
In basic condition E ring was converted into the cyclohexanedicarboxylic anhydride to form purpurin 18 derivatives by the air oxidation.
灰棕紫泥和红棕紫泥有较强的供钾潜力,红棕紫泥尤其是红棕紫泥水稻土必须注意施用钾肥以补充和维持土壤的钾素水平。
Potassium fertilizer should be applied to red-brown-purple soil especially paddy soil to supplement and maintain the K level in soil.
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