4-Ethoxyphenol
(Synonyms: 4-乙氧基苯酚) 目录号 : GC60514
4-Ethoxyphenol是一种内源性代谢产物。
Cas No.:622-62-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.50%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
4-Ethoxyphenol is an endogenous metabolite.
| Cas No. | 622-62-8 | SDF | |
| 别名 | 4-乙氧基苯酚 | ||
| Canonical SMILES | OC1=CC=C(OCC)C=C1 | ||
| 分子式 | C8H10O2 | 分子量 | 138.16 |
| 溶解度 | 储存条件 | Store at -20°C | |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 7.238 mL | 36.1899 mL | 72.3798 mL |
| 5 mM | 1.4476 mL | 7.238 mL | 14.476 mL |
| 10 mM | 0.7238 mL | 3.619 mL | 7.238 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Quantitative Determination of α-Arbutin, β-Arbutin, Kojic Acid, Nicotinamide, Hydroquinone, Resorcinol, 4-Methoxyphenol, 4-Ethoxyphenol, and Ascorbic Acid from Skin Whitening Products by HPLC-UV
J AOAC Int 2015 Jan-Feb;98(1):5-12.PMID:25857872DOI:10.5740/jaoacint.14-123.
An HPLC-UV method was developed for the quantitative analysis of nine skin whitening agents in a single injection. These compounds are α-arbutin, β-arbutin, kojic acid, nicotinamide, resorcinol, ascorbic acid, hydroquinone, 4-methoxyphenol, and 4-Ethoxyphenol. The separation was achieved on a reversed-phase C18 column within 30 min. The mobile phase was composed of water and methanol, both containing 0.1% acetic acid (v/v). The stability of the analytes was evaluated at different pH values between 2.3 and 7.6, and the extraction procedure was validated for different types of skin whitening product matrixes, which included two creams, a soap bar, and a capsule. The best solvent system for sample preparation was 20 mM NaH2PO4 containing 10% methanol at pH 2.3. The analytical method was validated for accuracy, precision, LOD, and LOQ. The developed HPLC-UV method was applied for the quantitation of the nine analytes in 59 skin whitening products including creams, lotions, sera, foams, gels, mask sheets, soap bars, tablets, and capsules.
Roimatacene: an antibiotic against Gram-negative bacteria isolated from Cystobacter ferrugineus Cb G35 (Myxobacteria)
Chemistry 2011 Jul 4;17(28):7875-81.PMID:21618624DOI:10.1002/chem.201003677.
Roimatacene (1) was isolated from the myxobacterium Cystobacter ferrugineus strain Cb G35 in a bioactivity-guided process, by following the antimicrobial activity against Escherichia coli. Since 1 was extremely sensitive to oxygen, a protective isolation and handling protocol was developed, by utilizing the free radical scavenger 4-Ethoxyphenol. The structure of 1 was determined by HRMS, 1D and 2D NMR spectroscopy and chemical derivatization to acetonides and Mosher esters to finally establish the absolute configuration. Methionine and acetate were identified as building blocks in the biosynthesis of 1 by feeding experiments with differently (13)C-labeled precursors. The antimicrobial activity of 1 was determined in a broad screening revealing 1 to inhibit several Gram-negative bacteria.
Melanogenesis-targeted anti-melanoma pro-drug development: effect of side-chain variations on the cytotoxicity of tyrosinase-generated ortho-quinones in a model screening system
Eur J Cancer 1997 Jan;33(1):135-43.PMID:9071913DOI:10.1016/s0959-8049(96)00340-1.
A set of 26 substituted phenols, 10 of which were synthesised in our laboratories, were tested for their rate of oxidation by mushroom tyrosinase in vitro as determined by oximetry and spectrophotometry and for their cytotoxic action in a model system. With one exception (4-hydroxybenzoic acid) all the agents tested were oxidised to the corresponding ortho-quinones. The maximum rates of oxidation varied between 15.1 +/- 0.59 nmoles oxygen consumed per minute (4-(2-thioethylthio)phenol) and 372.9 +/- 5.61 nmoles O2/ min. (4-(2-Hydroxyethylthio)phenol) in a reaction system comprising 300 units tyrosinase and 200 microM substrate. The rates of generation of quinone were in close agreement with these oximetric data. Some anomalies in oxygen stoichiometry were observed due to reoxidation of reaction products. Four categories of compounds were tested: those known to undergo side-chain cyclisation (such as tyrosine) (Group A), alkylphenols of increasing chain length with or without terminal hydroxyl groups (Group B), compounds with charged or bulky side-chains (Group C) and agents with oxy-, thio- and selenyl-ether side-chains (Groups D, E and F). In the majority of cases, the cytotoxicity, measured by the reduction of thymidine incorporation in cells exposed for 30 min to the agent in the presence of tyrosinase, reflected the rate of oxidation and is ascribed to the toxic action of the derived ortho-quinone. Tyrosinase-dependent cytotoxicity was absent in cyclising (Group A) and in Group C compounds. Toxicity, expressed by comparison with 4-hydroxyanisole (4HA) (IC50 = 11.7 microM), ranged between 0.36 (4-hydroxybenzyl alcohol) and 1.07 (3-(4-hydroxyphenyl)propanol) for Group B compounds, and be-tween 0.83 (4-Ethoxyphenol) and 2.08 (4-(2-hydroxyethylthio)phenol) for groups D, E and F. Addition of glutathione to the toxicity assay system abrogated the cytotoxic action and, on the basis of spectrophotometric data, this is ascribed to the prevention of cellular thiol depletion by the ortho-quinone products of tyrosinase oxidation of the phenolic substrates. The lack of toxicity of the group C compounds may be due to the inability of their derived quinones to gain access to the cells. Addition of catalase or deferoxamine to the incubation medium was without effect on tyrosinase-dependent toxicity.
Cytotoxicity of a selected series of substituted phenols towards cultured melanoma cells
Melanoma Res 1992 Dec;2(5-6):295-304.PMID:1292781DOI:10.1097/00008390-199212000-00002.
Substituted phenolic compounds were previously shown to exhibit cytotoxicity towards epithelial cells in the presence of the enzyme tyrosinase as a result of the formation of their quinone products. Seventeen of these compounds were tested for cytotoxic properties towards three different melanoma cell lines. The compounds were split into four groups of phenol derivatives, A; alkoxyethers, including 4-hydroxyanisole (4HA), B; oxyethers derivatized at the acyl side chain, C; oxyethers derivatized at the phenol, and D; acyl thioethers. Toxicity was determined by total cell counts after 3 days exposure to the compounds. Large reductions in cell numbers were observed with 4HA (the methoxy-), ethoxy-, propoxy and iso-butoxyethers of group A and the methyl- and propyl thioethers of phenol of group D. Derivatization of the ethoxy- and propoxy side chains (group B) did not seem to increase the cytotoxic effects, as determined by cell counts. Compounds of group C, which need intracellular esterase activity to release the phenols, showed moderate toxicities. Toxicity of certain compounds was confirmed by LDH release into the culture medium and by increased trypan blue uptake of cells exposed to the compounds. Flow cytometric investigations of cells after exposure for 24 h revealed that most compounds caused an increase in the proportion of cells in G1 phase. A complete accumulation of cells in S-phase was observed after exposure to 4-Ethoxyphenol. Inhibition of DNA synthesis was also shown by inhibition of bromodeoxyuridine incorporation. The results presented show that phenolic compounds exhibit cytotoxic properties towards melanoma cells some of which may be mediated by tyrosinase activity. Toxicity of the compounds was shown to be exerted during DNA replication but their toxic action may also be due to membrane damage and inhibition of cell metabolism.
Microperoxidase/H2O2-mediated alkoxylating dehalogenation of halophenol derivatives in alcoholic media
Proc Natl Acad Sci U S A 1997 Apr 29;94(9):4295-9.PMID:9113983DOI:10.1073/pnas.94.9.4295.
The results of this study report the H2O2-driven microperoxidase-8 (MP8)-catalyzed dehalogenation of halophenols such as 4-fluorophenol, 4-chlorophenol, 4-bromophenol, and 2-fluorophenol in alcoholic solvents. In methanol, the conversion of the para-halophenols and 2-fluorophenol to, respectively, 4-methoxyphenol and 2-methoxyphenol, as the major dehalogenated products is observed. In ethanol, 4-Ethoxyphenol is the principal dehalogenated product formed from 4-fluorophenol. Two mechanisms are suggested for this MP8-dependent alkoxylating dehalogenation reaction. In one of these mechanisms the oxene resonant form of compound I of MP8 is suggested to react with methanol forming a cofactor-peroxide-alkyl intermediate. This intermediate reacts with the reactive pi-electrons of the substrate, leading to the formation of the alkoxyphenols and the release of the fluorine substituent as fluoride anion.