Dehydro-Delta-tocopherol | CAS:802909-72-4

Dehydro-Delta-tocopherol

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Description:

Dehydro-δ-tocopherol shows antioxidant capacities.

In vitro:

Phytochemistry. 2004 Oct;65(19):2719-29.

Antioxidant dehydrotocopherols as a new chemical character of Stemona species.[Pubmed: 15464160]

METHODS AND RESULTS:
From the roots of various Stemona species four new dehydrotocopherols (chromenols) were isolated and their structures and stereochemistry elucidated by spectroscopic methods. The double bond between C-3 and C-4 proved to be a typical chemical character of the genus found in most of the species. Various C-methylations of the aromatic ring reflect differences in methyltransferase activities and agreed with the current species delimitations showing an exclusive accumulation of Dehydro-δ-tocopherol for the Stemona tuberosa group, whereas different provenances of Stemona curtisii were characterized by dehydro-gamma-tocopherol accompanied by small amounts of dehydro-alpha-tocopherol. From Stemona collinsae all four tocopherols were isolated with a clear preponderance of Dehydro-δ-tocopherol accompanied by smaller amounts of the rare dehydro-beta-tocopherol. Stemona burkillii and a group of unidentified species showed a weak accumulation trend towards dehydro-alpha-tocopherol, whereas Stemona cochinchinensis and especially Stemona kerrii clearly differed by a preponderance of chromanol derivatives. In Stemona cf. pierrei no tocopherols could be detected at all.
CONCLUSIONS:
Based on TLC tests and microplate assays with the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH*) the antioxidant capacities of all chromenol derivatives were comparable with that of alpha-tocopherol showing no significant differences among each other, except for a more rapid kinetic behaviour of the 5,7,8-methylated dehydro-alpha-tocopherol.

Dehydro-Delta-tocopherol Description

Source:	The roots of Stemona sessilifolia
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage:	Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C). Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
After receiving:	The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.

Product Name	Dehydro-Delta-tocopherol
Price:
CAS No.:	802909-72-4
Catalog No.:	CFN97674
Molecular Formula:	C₂₇H₄₄O₂
Molecular Weight:	400.65 g/mol
Purity:	>=98%
Type of Compound:	Phenols
Physical Desc.:	Oil
Source:	The roots of Stemona sessilifolia
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download:	COA MSDS SDF
Similar structural:	Comparison (Web) (SDF)
Guestbook:

Size /Price /Stock	10 mM * 100 uL in DMSO / Inquiry / In-stock 10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries	Antioxidants Compound Library Phenols Compound Library

	1 mg	5 mg	10 mg	20 mg	25 mg
1 mM	2.4959 mL	12.4797 mL	24.9594 mL	49.9189 mL	62.3986 mL
5 mM	0.4992 mL	2.4959 mL	4.9919 mL	9.9838 mL	12.4797 mL
10 mM	0.2496 mL	1.248 mL	2.4959 mL	4.9919 mL	6.2399 mL
50 mM	0.0499 mL	0.2496 mL	0.4992 mL	0.9984 mL	1.248 mL
100 mM	0.025 mL	0.1248 mL	0.2496 mL	0.4992 mL	0.624 mL

CFN92822	Beta-Tocotrienol	490-23-3	410.6	C₂₈H₄₂O₂
CFN96393	Beta-Tocopherol	148-03-8	416.7	C₂₈H₄₈O₂
CFN91685	(+)-gamma-Tocopherol	54-28-4	416.7	C₂₈H₄₈O₂
CFN92817	Gamma-Tocotrienol	14101-61-2	410.6	C₂₈H₄₂O₂
CFN92821	Alpha-Tocotrienol	1721-51-3	424.7	C₂₉H₄₄O₂
CFN90041	DL-alpha-Tocopherol	59-02-9	430.7	C₂₉H₅₀O₂
CFN98999	alpha-Tocopherol acetate	58-95-7	472.8	C₃₁H₅₂O₃
CFN97674	Dehydro-Delta-tocopherol	802909-72-4	400.65	C₂₇H₄₄O₂
CFN91145	(+)-Delta-Tocopherol	119-13-1	402.7	C₂₇H₄₆O₂
CFN98991	Confluentin	585534-03-8	326.5	C₂₂H₃₀O₂