ECHINENONE
Synonym(s):β,β-Caroten-4-one
- CAS NO.：432-68-8
- Empirical Formula: C40H54O
- Molecular Weight: 550.86
- MDL number: MFCD06656303
- EINECS: 207-083-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:20:39
What is ECHINENONE?
The Uses of ECHINENONE
Echinenone may be used as an external standard for the extraction of carotenoid from plasma samples. It may also been used as an internal standard, added to samples for extraction and quantification.
Definition
ChEBI: A carotenone that is beta-carotene in which the 4 position has undergone formal oxidation to afford the corresponding ketone. Isolated as orange-red crystals, it is widely distributed in marine invertebrates.
General Description
Echinenone is a carotenoid with a conjugated carbonyl group. Echinenone (4-keto-β-carotene) is a monoketo compound, is an intermediate between β-carotene and canthaxanthin in animals. It is one of the major carotenoids of Anabaena sp., and also present in Micrococcus roseus. It is located in the thylakoid membrane of Anabaena. The conversion of β-carotene to echinenone is catalysed by CrtO, a β-carotene ketolase.
Biochem/physiol Actions
Echinenone binds to glocobacter rhodopsin and functions as a light harvesting antenna in Gloeobacter violaceous.
Purification Methods
Purify β,β-caroten-4-one by chromatography on partially deactivated alumina or magnesia, or by using a thin layer plate of silica gel G with 4:1 cyclohexane/diethyl ether as the developing solvent. Recrystallise it from *C6H6/MeOH. Store it in the dark at -20o. The oxime crystallises from *C6H6 with m 208o. [Beilstein 7 III 2858, 7 IV 1881.]
Properties of ECHINENONE
| Melting point: | 178-180° |
| Boiling point: | 685.3±25.0 °C(Predicted) |
| Density | 0.972±0.06 g/cm3(Predicted) |
| storage temp. | -20°C |
| solubility | Chloroform (Slightly), Diethyl Ether (Slightly), Methanol (Slightly) |
| form | Solid |
| color | Dark Red to Very Dark Red |
| λmax | λ: 459 nm±5 nm Amax |
| BRN | 2030114 |
| Stability: | Light Sensitive, Temperature Sensitive |
Safety information for ECHINENONE
Computed Descriptors for ECHINENONE
New Products
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