在暴露于浓度为 1 μM BaP 的斑马鱼胚胎中，生育酚 (0-3 μM) 显着减弱 BaP 诱导的活动减退并增强运动活性 [3]。

Absorption, Distribution and Excretion
The bioavailability of vitamin E from tocofersolan is unique from than that of other medicinal products. Due to its amphipathic property in which it forms its own micelles, tocofersolan is readily taken up into enterocytes, even in the absence of bile salts; fat-soluble _d-alpha-tocopherol_ is then released after hydrolysis. This formulation enhances the absorption of d-alpha-tocopherol compared to the administration of free d-alpha-tocopherol. Additionally, tocophersolan may enhance the absorption of water-insoluble agents and other fat-soluble vitamins. Tocofersolan is a pro-drug; the active metabolite is the _d-alpha-tocopherol_. At low concentrations, tocofersolan forms micelles which improve the absorption of non-polar lipids such as other fat-soluble vitamins. Its required micellar concentration is low (0.04 to 0.06 mmol/l). A pharmacokinetic study of 12 healthy subjects compared tocofersolan with a water-miscible reference vitamin E after one single oral loading dose of 1200 IU (international units). The relative bioavailability of tocofersolan was found to be (Frel of 1.01 ± 1.74) with AUC0-t of 0.383 ± 0.203μM.h/mg, Cmax of 0.013 ± 0.006, Tmax of 6.0 h (6.0 – 24.0). For more information about Vitamin E metabolism, please visit the drug entry [DB11251].
Vitamin E is primarily eliminated in the bile (75%) and feces, either as free tocopherol or in oxidized forms. Urine is a minor elimination route of vitamin E (as glucuronic-conjugate).
Located principally on cell membranes, within mitochondria and microsomes, vitamin E is widely distributed throughout the body (red blood cells, brain, muscle, liver, platelets) and fat tissues are its primary reservoir.

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Metabolism / Metabolites
The hydrolysis of tocofersolan occurs in the gut lumen. Tocofersolan is absorbed by cells, and the alpha-tocopherol moiety appears in chylomicrons in the lymph system in a manner that is identical to vitamin E absorbed from dietary sources. Cellular uptake does not require receptors, binding proteins or metabolic processes and does not occur by pinocytosis. Absorption of deuterated tocofersolan demonstrated a normal pattern in lipoproteins: alpha-tocopherol peaked first in chylomicrons, then peaked in very low- density lipoproteins (VLDL) and finally in low-density lipoproteins (LDL) and high-density lipoproteins (HDL).

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Biological Half-Life
29.7 h

Protein Binding
Highly bound to lipoproteins.

[1]. Antioxidant capacity in Fasciola hepatica patients before and after treatment with triclabendazole alone or in combination with ascorbic acid (vitamin C) and tocofersolan (vitamin E). Arzneimittelforschung. 2003;53(3):214-20.

[2]. Recent developments in d-α-tocopheryl polyethylene glycol-succinate-based nanomedicine for cancer therapy [published correction appears in Drug Deliv. 2017 Nov;24(1):1930]. Drug Deliv. 2017;24(1):1831-1842.

[3]. The use of tocofersolan as a rescue agent in larval zebrafish exposed to benzo[a]pyrene in early development. Neurotoxicology. 2021 Sep;86:78-84.

D-Alpha-tocopheryl polyethylene glycol 1000 succinate (Tocofersolan, Vedrop), has been developed in Europe as an orally bioavailable source of vitamin E in children suffering from cholestasis. Cholestasis is the reduction or stoppage of bile flow, either to impaired secretion by hepatocytes (liver cells) or obstruction,. Tocofersolan is a polyethylene glycol derivative of α-tocopherol and synthetic water-soluble version of [DB11251]. Tocofersolan is an oral treatment of vitamin E deficiency due to digestive malabsorption in pediatric patients with congenital chronic cholestasis or hereditary chronic cholestasis. It was approved by the European Medicines Agency (EMA) in June 2009 under the market name Vedrop. Moreover, the agent is capable of demonstrating antioxidant effects that make it a popular component to include in cosmetics and pharmaceuticals as well. In addition to the above, tocofersolan has been studied as a promising application as an absorption enhancer in drug delivery [MSDS].
See also: Vitamin E Polyethylene Glycol Succinate (annotation moved to).

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Drug Indication
Tocofersolan is indicated in vitamin E deficiency caused by digestive malabsorption in pediatric patients with congenital chronic cholestasis or hereditary chronic cholestasis from birth (full term newborns) up to 18 years of age.
FDA Label

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Mechanism of Action
Vitamin E is a major lipo-soluble antioxidant in humans. It acts as a free radical chain breaking molecule, halting the peroxidation of polyunsaturated fatty acids and it plays an important role in maintaining both the stability and integrity of cell membranes.

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Pharmacodynamics
Because of its increased solubility,,, this medication readily penetrates cells, unlike other types of vitamin E [MSDS], which are strictly fat-soluble [MSDS]. Specific to cholestasis, tocofersolan normalizes vitamin E levels relieving the symptoms of deficiency because of its facilitation of vitamin E absorption,.

C35H58O6

574.84

574.423

9002-96-4

59-02-9 (vitamin E);58-95-7 (acetate);17407-37-3 (Hemisuccinate);9002-96-4 (PEG 1000 succinate);

9938056

Off-white to light yellow <34°C powder,>38°C liquid

1.01g/cm3

662.7ºC at 760mmHg

34-38ºC

195.4ºC

1.496

8.388

100.52

1

6

20

41

768

3

C(=O)(OC1C(C)=C2CCC(C)(CCCC(CCCC(CCCC(C)C)C)C)OC2=C(C)C=1C)CCC(=O)OCO

AOBORMOPSGHCAX-AZAGJHQNSA-N

InChI=1S/C35H58O6/c1-24(2)12-9-13-25(3)14-10-15-26(4)16-11-20-35(8)21-19-30-29(7)33(27(5)28(6)34(30)41-35)40-32(38)18-17-31(37)39-23-22-36/h24-26,36H,9-23H2,1-8H3/t25-,26-,35-/m1/s1

D –α-TocopherolPEG 1000 succinate 2-hydroxyethyl (2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)chroman-6-yl) succinate

Vitamin E-TPGSD –α-Tocopherol PEG 1000 succinate TPGS,D-α-Tocopherol polyethylene glycol succinate, Vitamin E polyethylene glycol succinate,

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

DMSO : ~100 mg/mL (~66.09 mM)
H2O : ~100 mg/mL (~66.09 mM)
Ethanol : ~50 mg/mL (~33.05 mM)

配方 1 中的溶解度: ≥ 2.5 mg/mL (1.65 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将100 μL 25.0 mg/mL澄清DMSO储备液加入到400 μL PEG300中，混匀；然后向上述溶液中加入50 μL Tween-80，混匀；加入450 μL生理盐水定容至1 mL。
*生理盐水的制备：将 0.9 g 氯化钠溶解在 100 mL ddH₂O中，得到澄清溶液。

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配方 2 中的溶解度: ≥ 2.5 mg/mL (1.65 mM) (饱和度未知) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 25.0 mg/mL澄清DMSO储备液加入900 μL 20% SBE-β-CD生理盐水溶液中，混匀。
*20% SBE-β-CD 生理盐水溶液的制备（4°C，1 周）：将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中，得到澄清溶液。

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配方 3 中的溶解度: ≥ 2.5 mg/mL (1.65 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 25.0 mg/mL 澄清 DMSO 储备液加入到 900 μL 玉米油中并混合均匀。

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配方 4 中的溶解度: ≥ 2.5 mg/mL (1.65 mM) (饱和度未知) in 5% DMSO + 40% PEG300 + 5% Tween80 + 50% Saline (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
*生理盐水的制备：将 0.9 g 氯化钠溶解在 100 mL ddH₂O中，得到澄清溶液。

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配方 5 中的溶解度: ≥ 2.5 mg/mL (1.65 mM) (饱和度未知) in 5% DMSO + 95% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
*20% SBE-β-CD 生理盐水溶液的制备（4°C，1 周）：将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中，得到澄清溶液。

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配方 6 中的溶解度: 100 mg/mL (66.09 mM) in PBS (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液; 超声助溶 (<60°C).

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。