Isobutyl 4-HydroxybenzoateCAS# 4247-02-3 |
Quality Control & MSDS
Number of papers citing our products
Chemical structure
3D structure
| Cas No. | 4247-02-3 | SDF | Download SDF |
| PubChem ID | 20240 | Appearance | White crystalline powder |
| Formula | C11H14O3 | M.Wt | 194.23 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. | ||
| Chemical Name | 2-methylpropyl 4-hydroxybenzoate | ||
| SMILES | CC(C)COC(=O)C1=CC=C(C=C1)O | ||
| Standard InChIKey | XPJVKCRENWUEJH-UHFFFAOYSA-N | ||
| Standard InChI | InChI=1S/C11H14O3/c1-8(2)7-14-11(13)9-3-5-10(12)6-4-9/h3-6,8,12H,7H2,1-2H3 | ||
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
Isobutyl 4-Hydroxybenzoate Dilution Calculator
Isobutyl 4-Hydroxybenzoate Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 5.1485 mL | 25.7427 mL | 51.4854 mL | 102.9707 mL | 128.7134 mL |
| 5 mM | 1.0297 mL | 5.1485 mL | 10.2971 mL | 20.5941 mL | 25.7427 mL |
| 10 mM | 0.5149 mL | 2.5743 mL | 5.1485 mL | 10.2971 mL | 12.8713 mL |
| 50 mM | 0.103 mL | 0.5149 mL | 1.0297 mL | 2.0594 mL | 2.5743 mL |
| 100 mM | 0.0515 mL | 0.2574 mL | 0.5149 mL | 1.0297 mL | 1.2871 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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A comprehensive study of a new versatile microchip device based liquid phase microextraction for stopped-flow and double-flow conditions.[Pubmed:29729862]
J Chromatogr A. 2018 Jun 29;1556:29-36.
A new geometry for a versatile microfluidic-chip device based liquid phase microextraction was developed in order to enhance the preconcentration in microfluidic chips and also to enable double-flow and stopped-flow working modes. The microchip device was combined with a HPLC procedure for the simultaneous determination of two different families as model analytes, which were parabens and non-steroidal anti-inflammatories (NSAIDs): Ethyl 4-hydroxybenzoate (Et-P), Propyl 4-hydroxybenzoate (Pr-P), Butyl 4-hydroxybenzoate (Bu-P), Isobutyl 4-Hydroxybenzoate (iBu-P), salycilic acid (SAC), ketoprofen (KET), naproxen (NAX), diclofenac (DIC) and ibuprofen (IBU) in urine samples. The new miniaturized microchip proposed in this work allows not only the possibility of working in double-flow conditions, but also under stagnant conditions (stopped-flow) (SF-muLPME). The sample (pH 1.5) was delivered to the SF-muLPME at 20muLmin(-1) while keeping the acceptor phase (pH 11.75) under stagnant conditions during 20min. The highest enrichment factors (between 16 and 47) were obtained under stopped-flow conditions at 20muLmin(-1) (sample flow rate) after 20min extraction; whereas the extraction efficiencies were within the range of 27-81% for all compounds. The procedure provided very low detection limits between 0.7 and 8.5mugL(-1) with a sample volume consumption of 400muL. Parabens and NSAIDs have successfully been extracted from urine samples with excellent clean up and recoveries over 90% for all compounds. In parallel, the new device was also tested under double flow conditions, obtaining good but lower enrichment factors (between 9 and 20) and higher extraction efficiencies (between 45 and 95) after 7min extraction, consuming a volume sample of 140muL. The versatile device offered very high extraction efficiencies and good enrichment factor for double flow and stopped-flow conditions, respectively. In addition, this new miniaturized SF-muLPME device significantly reduced costs compared to the existing analytical techniques for sample preparation since this microchip require few microliters of sample and reagents and it is reusable.
Electromembrane extraction for the determination of parabens in water samples.[Pubmed:26753971]
Anal Bioanal Chem. 2016 Feb;408(6):1615-21.
To our knowledge, for the first time an electromembrane extraction combined with a high-performance liquid chromatography procedure using diode-array detection has been developed for the determination of five of the most widely used parabens: ethyl 4-hydroxybenzoate, propyl 4-hydroxybenzoate, butyl 4-hydroxybenzoate, Isobutyl 4-Hydroxybenzoate, and benzyl 4-hydroxybenzoate. Parabens were extracted from pH 4 aqueous sample solutions with use of an Accurel(R) S6/2 polypropylene hollow fiber that supports a liquid membrane of 1-octanol to a pH 12 aqueous acceptor solution placed inside the lumen of the hollow fiber. An electric current of 30 V was applied over the supported liquid membrane by means of platinum wires placed in the donor and acceptor phases. Parabens were extracted in 40 min with enrichment factors in the 30-49 range. The procedure has detection limits between 0.98 and 1.43 mug L(-1). The method was applied to the determination of parabens in surface environmental waters with excellent results.
A simple and fast Double-Flow microfluidic device based liquid-phase microextraction (DF-microLPME) for the determination of parabens in water samples.[Pubmed:28153288]
Talanta. 2017 Apr 1;165:496-501.
A fast double-flow microfluidic based liquid phase microextraction (DF-microLPME) combined with a HPLC-UV procedure using diode array detection has been developed for the determination of the four most widely used parabens: Ethyl 4-hydroxybenzoate (EtP), Propyl 4-hydroxybenzoate (PrP), Butyl 4-hydroxybenzoate (BuP) and Isobutyl 4-Hydroxybenzoate (iBuP) in water samples. Parabens have successfully been determined in environmental (lake and river water) samples with excellent clean up, high extraction efficiency and good enrichment factor using double-flow conditions. The microfluidic device consists of two micro-channels, which contain the acceptor and sample solution separated by a flat membrane (support liquid membrane). The sample (0.32mM HCl) and acceptor phase (5.6mM NaOH) are delivered to the microLPME at 10microLmin(-1) and 1microLmin(-1) flow rate, respectively. The extraction efficiencies are over 84% for all compounds in water samples with enrichment factors within the range of 9-11 and recoveries over 80%. The procedure provides very low detection limits between 1.6 and 3.5microgL(-1). The extraction time and the volume required for the extraction are 5min and 50microL, respectively; which are greatly lower compared to any previous extraction procedure for parabens analysis. In addition, this miniaturized DF- microLPME procedure significantly reduces costs compared to not only the existing methods for paraben detection, but also to the existing analytical techniques for sample preparation.
