Any member of the class of 1,4-naphthoquinones in which the naphthoquinone moiety is substituted by at least one hydroxy group.
| Member | Definition | Role |
|---|
| 7-methyljuglone | | Ramentaceone |
| alkannin | | Alkannin |
| beta, beta-dimethylacrylshikonin, (+)-isomer | | beta,beta-Dimethylacrylshikonin |
| deoxyshikonin | | Deoxyshikonin |
| diospyrin | | Diospyrin |
| isobutyrylshikonin | | Isobutylshikonin |
| juglone | A hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone in which the hydrogen at position 5 has been replaced by a hydroxy group. A plant-derived 1,4-naphthoquinone with confirmed antibacterial and antitumor activities. | juglone |
| naphthazarin | A naphthoquinone that is 1,4-naphthoquinone in which the hydrogens at positions 5 and 8 are replaced by hydroxy groups. | naphthazarin |
| plumbagin | A hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone in which the hydrogens at positions 2 and 5 are substituted by methyl and hydroxy groups, respectively. | plumbagin |
| shikonin | | Shikonin |