Lawsone (2-hydroxy-1,4-naphthoquinone), also known as hennotannic acid, is a red-orange dye present in the leaves of the henna plant (Lawsonia inermis), for which it is named, as well as in the common walnut (Juglans regia) [5] and water hyacinth (Pontederia crassipes). [6]

Lawsone is 1,4-Naphthoquinone carrying a hydroxy function at C-2. It is obtained from the leaves of Lawsonia inermis. It has a role as a protective agent and an antifungal agent. It is a tautomer of a naphthalene-1,2,4-trione.

2025年2月8日 · 2-羟基-1,4-萘醌是无毛劳森（hensonia）叶提取物的活性成分。 它具有潜在的抗菌活性，可用于检测纸张表面上的潜在指印。 染料和代谢产物。 Lawsone 是一种萘醌染料，从 Lawsonia inermis 的叶片中分离得到，具有抗菌和抗氧化活性。 亮黄色棱状结晶。 熔点195-196℃（分解）。 溶于冰醋酸。 紫外线吸收剂，染料。 将1，2-萘醌-4-磺酸铵和硫在甲醇中反应，得到甲氧基萘醌，再用氢氧化钠水解，得到2-羟基-1，4-萘醌。 收率58-65%。 TOKYO …

Lawsone, a naturally occurring organic compound also called hennotannic acid, obtained mainly from Lawsonia inermis (Henna). It is a potential drug-like molecule with unique chemical and biological characteristics. Traditionally, henna is used in hair and skin coloring and is also a medicinal herb for various diseases.

Lawsone is a natural naphthoquinone present in the henna leaf extract with several cytotoxic activities and used as precursor for synthesis of various pharmaceutical compounds. Its biological activities are thought to be the result of oxidative stress generated, although the hydroxy group at …

2024年10月14日 · Lawsone (2-hydroxy-1,4-naphthoquinone; aka hennotannic acid) is a dye found in the leaves of the henna plant (Lawsonia inermis). Solid lawsone is yellow; but when it or powdered henna leaves are dispersed in water or other aqueous materials to form a paste, it becomes a deep reddish-brown.

Lawsone, a major colorant component extracted from Lawsonia inermis (Henna), and Juglone, extracted from walnut (Juglans), are the two most prominent members of naphthoquinone-type dyes (Fig. 17.8) (Endrini, 2002, 2007).

Lawsone is an orally active naphthoquinone dye that can be isolated from the leaves of Lawsonia inermis. Lawsone can induce apoptosis. Lawsone has antibacterial, antitumor and antioxidant activities. Lawsone can be used in anti-tumor drug research.

2-羟基-1,4-萘醌，一种有机化学物质，分子式：C10H6O3。 熔点：192-195 °C (dec.) (lit.) 10. 同位素原子 数量:0. 将1,2-萘醌-4-磺酸铵和硫在甲醇中反应,得到甲氧基萘醌,再用氢氧化钠水解,得到2-羟基-1,4-萘醌。 收率58-65%。 常用作染发剂、杀菌剂。 [2] 2-羟基-1,4-萘醌，一种有机化学物质，分子式：C10H6O3。

2019年12月6日 · Lawsone, a 2-hydroxy-1,4-naphthoquinone (Fig. 1), is the main active compound present in the henna leaf extract that was considered for biomedical uses due to its high cytotoxic activities against disease-causing bacteria, fungi and protozoa and by its antitumoral activity [40].