4-Hydroxyphenyl acetate
(Synonyms: 4-HPA; 4-Acetoxyphenol) 目录号 : GC680554-Hydroxyphenyl acetate 是一种天然的抗氧化剂，可以保护细胞免受氧化应激引起的坏死。4-Hydroxyphenyl acetate 阻断氧化应激引起的细胞 ROS 增加，通过稳定和诱导 NRF2 转录因子核易位上调 NQO1 和 HO-1 基因。
Cas No.:3233-32-7
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
4-Hydroxyphenyl acetate (4-HPA) is a natural antioxidant and protects cells from oxidative stress-induced necrosis. 4-Hydroxyphenyl acetate blocks the increase of cellular ROS induced by oxidative stress, and up-regulates NQO1 and HO-1 genes by stabilizing and inducing the nuclear translocation of NRF2 transcription factor[1].
4-Hydroxyphenyl acetate (5 μM; 24 h) protects retinal pigment epithelial (RPE) cells from oxidative stress-induced cell death[1].
4-Hydroxyphenyl acetate (5 μM; 24 h; ARPE-19 cells) inhibits the increase of ROS in response to oxidative stress and up-regulated the expression of cytoprotective genes including NQO1 and HO-1 genes[1].
Cell Viability Assay[1]
| Cell Line: | ARPE-19 cells |
| Concentration: | 5 μM |
| Incubation Time: | 24 hours |
| Result: | Protected up to 89%, 92%, and 90% of ARPE-19 cells exposed to 100, 200, and 300 μM tBHP, respectively. |
[1]. Hanus J, et, al. 4-Acetoxyphenol Prevents RPE Oxidative Stress-Induced Necrosis by Functioning as an NRF2 Stabilizer. Invest Ophthalmol Vis Sci. 2015 Aug;56(9):5048-59.
| Cas No. | 3233-32-7 | SDF | Download SDF |
| 别名 | 4-HPA; 4-Acetoxyphenol | ||
| 分子式 | C8H8O3 | 分子量 | 152.15 |
| 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 | 6.5725 mL | 32.8623 mL | 65.7246 mL |
| 5 mM | 1.3145 mL | 6.5725 mL | 13.1449 mL |
| 10 mM | 0.6572 mL | 3.2862 mL | 6.5725 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。
Conversion of 4-hydroxyacetophenone into 4-phenyl acetate by a flavin adenine dinucleotide-containing Baeyer-Villiger-type monooxygenase
J Bacteriol 2000 Dec;182(23):6565-9.PMID:11073896DOI:10.1128/JB.182.23.6565-6569.2000.
An arylketone monooxygenase was purified from Pseudomonas putida JD1 by ion exchange and affinity chromatography. It had the characteristics of a Baeyer-Villiger-type monooxygenase and converted its substrate, 4-hydroxyacetophenone, into 4-Hydroxyphenyl acetate with the consumption of one molecule of oxygen and oxidation of one molecule of NADPH per molecule of substrate. The enzyme was a monomer with an M(r) of about 70,000 and contained one molecule of flavin adenine dinucleotide (FAD). The enzyme was specific for NADPH as the electron donor, and spectral studies showed rapid reduction of the FAD by NADPH but not by NADH. Other arylketones were substrates, including acetophenone and 4-hydroxypropiophenone, which were converted into phenyl acetate and 4-hydroxyphenyl propionate, respectively. The enzyme displayed Michaelis-Menten kinetics with apparent K(m) values of 47 microM for 4-hydroxyacetophenone, 384 microM for acetophenone, and 23 microM for 4-hydroxypropiophenone. The apparent K(m) value for NADPH with 4-hydroxyacetophenone as substrate was 17.5 microM. The N-terminal sequence did not show any similarity to other proteins, but an internal sequence was very similar to part of the proposed NADPH binding site in the Baeyer-Villiger monooxygenase cyclohexanone monooxygenase from an Acinetobacter sp.
4-Ethylphenol metabolism by Aspergillus fumigatus
Appl Environ Microbiol 1994 Jun;60(6):1978-83.PMID:8031091DOI:10.1128/aem.60.6.1978-1983.1994.
Aspergillus fumigatus ATCC 28282 was found to be capable of growth on 4-ethylphenol as its sole carbon and energy source. A pathway for the metabolism of this compound has been proposed. The initial step involves hydroxylation of the methylene group of 4-ethylphenol to form 1-(4'-hydroxyphenyl)ethanol, followed by oxidation to 4-hydroxyacetophenone. The hydroxylase was NADPH and oxygen dependent, which is a characteristic of a monooxygenase type of enzyme. The 1-(4'-hydroxyphenyl)ethanol isolated from growth medium was a racemic mixture of R-(+) and S-(-) enantiomers. 4-Hydroxyacetophenone undergoes an NADPH-dependent Baeyer-Villiger type of oxygenation to give 4-Hydroxyphenyl acetate, which is hydrolyzed to form hydroquinone (1,4-dihydroxybenzene). Hydroxylation of hydroquinone by an NADPH-dependent enzyme produces 1,2,4-trihydroxybenzene, the ring fission substrate, which is cleaved by ortho fission to form maleylacetate. The pathway was elucidated by various kinds of investigations. Analysis of culture medium sampled during growth on 4-ethylphenol revealed the transient appearance of 1-(4'-hydroxyphenyl)ethanol, 4-hydroxyacetophenone, and hydroquinone. Cells grown on 4-ethylphenol were able to oxidize all of these compounds immediately, whereas oxidation by succinate-grown cells showed a lag period. Extracts prepared from cells grown on 4-ethylphenol contained enzyme activities for all of the proposed steps. Apart from a low level of esterase activity towards 4-Hydroxyphenyl acetate, extracts prepared from cells grown on succinate did not contain any of these enzyme activities.