Delphinidin (also delphinidine[1][2]) is an anthocyanidin, a primary plant pigment, and also an antioxidant.[3] Delphinidin gives blue hues to flowers in the genera Viola and Delphinium. It also gives the blue-red color of the grape variety Cabernet Sauvignon, and can be found in cranberries and Concord grapes as well as pomegranates,[4] and bilberries.[5]
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| Names | |
|---|---|
| IUPAC name
3,3′,4′,5,5′,7-Hexahydroxyflavylium | |
| Systematic IUPAC name
3,5,7-Trihydroxy-2-(3,4,5-trihydroxyphenyl)-1λ4-1-benzopyran-1-ylium | |
| Identifiers | |
 Y | |
3D model (JSmol) |
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| ChEBI | |
| ChEMBL |
 N |
| ChemSpider |
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| ECHA InfoCard | 100.007.671 
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| E number | E163b (colours) |
| KEGG |
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PubChem CID |
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| UNII |
Y |
CompTox Dashboard (EPA) |
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| Properties | |
| C15H11O7+ | |
| Molar mass | 303.24 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Delphinidin, like nearly all other anthocyanidins, is pH-sensitive, i.e. a natural pH indicator, and changes from blue in basic solution to red in acidic solution.
Several glycosides derived from delphinidin are known:
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