naphthoquinone

chemical compound

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Last updated

July 1, 2026

Quick Summary

Naphthoquinones are a class of cyclic organic compounds that play a role in biological pigments. They are found in bacteria, fungi, and higher plants, and are known for their yellow, orange, red, or purple crystalline forms. Naphthoquinones are soluble in organic solvents and have been used as dyes for fabrics. Notable examples include the K vitamins, which are essential for blood clotting. Some naphthoquinones, like echinochromes and spinochromes, are found in sea urchins and contribute to their coloration. Naphthoquinones are typically prepared by oxidizing aromatic amines or polynuclear hydrocarbons.12

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coloration
Naphthoquinones
Naphthoquinones are encountered in some bacteria and in the leaves, seeds, and woody parts of higher plants. They can be recovered as yellow, orange, red, or purple crystals. They are soluble in organic solvents and have been used extensively as dyes for fabrics. Among…
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Naphthoquinones are encountered in some bacteria and in the leaves, seeds, and woody parts of higher plants. They can be recovered as yellow, orange, red, or purple crystals. They are soluble in organic solvents and have been used extensively as dyes for fabrics. Among…
Read More