Ethopabate (Ethyl pabate)
(Synonyms: 乙氧酰胺苯甲酯) 目录号 : GC32218
A coccidiostat
Cas No.:59-06-3
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Ethopabate is a coccidiostat.1,2 In vivo, ethopabate reduces lesion score in broiler chickens infected with E. tenella, E. acervulina, and E. maxima field isolates when administered in combination with the antiprotozoal agent amprolium . Ethopabate has been found as a contaminant in environmental waters.3 Formulations containing ethopabate have been used to prevent coccidiosis in broiler chickens.
1.Mathis, G.F., and McDougald, L.R.Drug responsiveness of field isolates of chicken CoccidiaPoult. Sci.61(1)38-45(1982) 2.Oe, O., and Arakawa, A.Effect of feed additive antibiotics on chickens infected with Eimeria tenellaPoult. Sci.54(4)1008-1018(1975) 3.Mooney, D., Coxon, C., Richards, K.G., et al.A new sensitive method for the simultaneous chromatographic separation and tandem mass spectrometry detection of anticoccidials, including highly polar compounds, in environmental watersJ. Chromatogr. A1618460857(2020)
| Cas No. | 59-06-3 | SDF | |
| 别名 | 乙氧酰胺苯甲酯 | ||
| Canonical SMILES | O=C(OC)C1=CC=C(NC(C)=O)C=C1OCC | ||
| 分子式 | C12H15NO4 | 分子量 | 237.25 |
| 溶解度 | DMSO : 106 mg/mL (446.79 mM) | 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 | 4.215 mL | 21.0748 mL | 42.1496 mL |
| 5 mM | 0.843 mL | 4.215 mL | 8.4299 mL |
| 10 mM | 0.4215 mL | 2.1075 mL | 4.215 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。
Evaluation of radioiodinated Ethopabate as a potential tumor targeting agent
Appl Radiat Isot 2022 Feb;180:110063.PMID:34922310DOI:10.1016/j.apradiso.2021.110063.
Overexpression of folate synthesis and folate receptor in a wide variety of tumors was reported. As a result, folate derivatives have emerged as a potential candidate for tumor imaging and therapy. Ethopabate is a structural analogue of para-aminobenzoic acid (PABA), a precursor of folic acid. Ethopabate was radiolabeled with radioiodine-131 (131I) via direct electrophilic substitution reaction. Several factors that might affect the radiolabeling yield were studied. Paper chromatography was utilized for testing and evaluation of [131I]iodoethopabate, and HPLC was used as a co-chromatographic tool to confirm the radiochemical yield. The biodistribution of [131I]iodoethopabate in normal and tumor-bearing mice was investigated. The radioiodination of Ethopabate resulted in a radiochemical yield of 93.70 ± 0.19%. The biodistribution data revealed that [131I]iodoethopabate was taken up by tumors with promising target/non-target (T/NT) ratios. Where, the tumor to-blood ratios were 3.30 ± 0.40 and 4.06 ± 0.10 at 1 and 4 h post injection, respectively. As a result of these findings, [131I]iodoethopabate appears to have excellent tumor uptake and adequate stability to be used for diagnostic purpose in the future.
Novel spectrofluorimetric technique for determination of amoxicillin and Ethopabate in chicken tissues, liver, kidney, eggs, and feed premix
Luminescence 2021 Jun;36(4):875-884.PMID:33341100DOI:10.1002/bio.3999.
A new smart spectrofluorometric method was developed for the quantitation of amoxicillin and Ethopabate simultaneously for the first time. The method is based on measuring their first derivative synchronous amplitudes in water at Δλ = 80 nm. The peak amplitudes were recorded at their crossing points; 240 nm for amoxicillin and 280 nm for Ethopabate. The method is linear over the concentration ranges of 100.0-1,000.0 ng/ml for amoxicillin and 2.0-20.0 ng/ml for Ethopabate. The limits of detection were 20.0 ng/ml and 0.58 ng/ml and limits of quantitation were 60.0 ng/ml and 1.92 ng/ml for amoxicillin and Ethopabate, respectively. The method sensitivity permitted the determination of the two drugs below their maximum residue limit stated by the federal regulations. The developed method was applicable to the analysis of both drugs in the veterinary powders, feed premix, chicken tissues, liver, kidney, and eggs samples with percentage recoveries ranging 93.72-104.71%.
Spectrofluorimetric analysis of Ethopabate in veterinary formulations with application to residue determination in chicken muscles and liver
Luminescence 2014 Dec;29(8):1188-93.PMID:24817251DOI:10.1002/bio.2683.
Ethopabate is a veterinary drug used in the prophylaxis and treatment of coccidiosis in chickens. The presence of drug residues in edible tissues can be dangerous to human consumers. It may cause direct toxic effects, allergic reactions and increased bacterial resistance. A highly sensitive, simple and rapid spectrofluorimetric method was developed for the determination of Ethopabate in its veterinary formulations. The proposed method is based on measuring the native fluorescence of Ethopabate in water at 364 nm after excitation at 270 nm. The fluorescence-concentration plot was rectilinear over the range of 2-100 ng/mL, with a limit of detection of 2.9 ng/g and a limit of quantification of 9.8 ng/g for Ethopabate. The method was successfully applied to the analysis of Ethopabate in its commercial veterinary formulations and the results were in good agreement with those obtained with the reference method. The method was extended to the determination of Ethopabate residues in chicken muscles and liver, and the results were satisfactory. The recoveries obtained were in the 108.36-113.42% range. No organic solvents are used in the procedure, so it can be considered a type of 'green' chemistry.
Comprehensive stability-indicating high-performance liquid chromatography coupled with diode array detection method for simultaneous determination of amprolium hydrochloride and Ethopabate in powder dosage form for veterinary use
J Sep Sci 2019 Nov;42(21):3340-3351.PMID:31509638DOI:10.1002/jssc.201900440.
This research deals with the development of a stability-indicating high-performance liquid chromatography method for simultaneous determination of amprolium hydrochloride and Ethopabate. To the best of our knowledge, no comprehensive stability-indicating method has been reported for analysis of this mixture. Separation was achieved using Kromasil cyano column with gradient elution of the mobile phase composed of sodium hexane sulfonate solution and methanol. Quantification was based on measuring peak areas at 266 nm. Amprolium and Ethopabate peaks eluted at retention times 10.42 and 18.53 min, respectively. The proposed procedure was validated with respect to system suitability, linearity, ranges, precision, accuracy, specificity, robustness, detection, and quantification limits. Linearity ranges for amprolium and Ethopabate were 1.5-240 and 1-160 μg/mL, respectively. Analytes were subjected to stress conditions of hydrolysis, oxidation and thermal degradation. The proposed method enabled resolution of drugs from their forced-degradation products and amprolium related substance (2-picoline). Moreover, specificity was verified by resolution of the analytes from about 22 drugs used in antimicrobial veterinary products. The validated method was successfully applied to assay of the combined veterinary powder dosage form, additionally it was implemented in the accelerated stability study of the dosage form when stored for six months at 40°C and 75% relative humidity.
Sensitive spectrofluorimetric methods for determination of Ethopabate and amprolium hydrochloride in chicken plasma and their residues in food samples
Spectrochim Acta A Mol Biomol Spectrosc 2015;150:430-9.PMID:26057097DOI:10.1016/j.saa.2015.05.082.
Two sensitive and selective spectrofluorimetric methods are proposed to determine Ethopabate (ETH) and amprolium hydrochloride (AMP). First derivative synchronous spectrofluorimetry determines the natively fluorescent Ethopabate at 288 nm in presence of amprolium hydrochloride which is a non fluorescent quaternary compound with average recovery 100.54±0.721 over a concentration range of 0.01-0.8 μg/mL. Limits of detection (LOD) and quantification (LOQ) are 0.002 and 0.007 μg/mL, respectively. The second method is direct synchronous spectrofluorimetry for determining amprolium hydrochloride at 362 nm after a reaction with 5% NaOH and 0.08% potassium ferricyanide that is optimized by a two-level factorial design. This method is linear over a concentration range of 0.01-0.65 μg/mL with average recovery 99.4±1.28. Limits of detection (LOD) and quantification (LOQ) are 0.002 and 0.006 μg/mL, respectively. The proposed methods are found to be valid and applicable for the analysis of ETH and AMP in their veterinary formulation. They are successfully applied to determine the studied drugs in chicken plasma and their residues in chicken muscle, liver, egg and chicken-based baby food product with recoveries in the ranges of 95.71-108.73% and 97.36-111.89% and for ETH and AMP, respectively.