quinone

Diketone from benzene

Quinone is a class of organic compounds derived from aromatic rings, characterized by a ring structure with two carbonyl groups.

These yellow crystalline compounds occur widely in nature and serve various biological functions—ubiquinone (coenzyme Q) plays a crucial role in cellular respiration.

Quinones are used industrially in dyes, photography, and as oxidizing agents.

chemistry

reduction

Making something smaller

oxidationLosing electrons chemically
electronNegative subatomic particle
redoxElectron transfer chemistry

carbonyl · conjugation · resonance · aromaticity · electrochemistry · tautomerism · nucleophile · electrophile · keto-enol

biochemistry

redox

Electron transfer chemistry

photosynthesisLight-to-sugar conversion in plants
respirationGas exchange in organisms
cytochromeHeme protein transferring electrons

mitochondria · chloroplast · dehydrogenase · proton-pump · bioenergetics · metabolism

pigmentation

melanin

Natural coloring compound

melanocyteCell that produces melanin
skinBody's outer layer
colorationSurface hue arrangement

tanning · eumelanin · chromophore · pigment · hyperpigmentation · vitiligo · albinism · melasma · iris · freckles

natural

alizarin

Synthetic red dye compound

hennaPlant-derived body dye
walnutEdible hard-shelled seed
madderMore irate

tannin · antifungal · dye · antibacterial

Opposites

redox state

quinonehydroquinone

Aromatic compound, two OH groups

aromatic parent relationship

quinonebenzene

Aromatic hydrocarbon solvent

naphthalene

Family

hydroquinone

Familiarity: Top 1,000,000
Profile: Used worldwide · Timeless · Concrete · Rated G