Names | |
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IUPAC name
8,8′-Diapocarotene-8,8′-dioic acid
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Systematic IUPAC name
(2E,4E,6E,8E,10E,12E,14E)-2,6,11,15-Tetramethylhexadeca-2,4,6,8,10,12,14-heptaenedioic acid[2] | |
Other names
8,8'-Diapocarotenedioic acid;[1] Transcrocetinate
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Identifiers | |
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3D model (JSmol)
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3DMet | |
1715455 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.044.265 |
EC Number |
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KEGG | |
MeSH | crocetin |
PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
C20H24O4 | |
Molar mass | 328.408 g·mol−1 |
Appearance | Red crystals |
Melting point | 285 °C (545 °F; 558 K) |
log P | 4.312 |
Acidity (pKa) | 4.39 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Crocetin is a natural apocarotenoid dicarboxylic acid that is found in the crocus flower together with its glycoside, crocin, and Gardenia jasminoides fruits. It is also known as crocetic acid.[3][4] It forms brick red crystals with a melting point of 285 °C.
The chemical structure of crocetin forms the central core of crocin, the compound responsible for the color of saffron. Crocetin is usually extracted commercially from gardenia fruit, due to the high cost of saffron.