Ethyl acetate

GA₃, Tween-20, N-(3-dimethylaminopropyl)-N0-ethylcarbodiimide (EDC) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Standard compound theanine, uniconazole, were purchased from Solarbio Science & Technology (Beijing, China). Phosphoric acid (Hromatographic grade), methanol (MeOH), formic acid (FA), acetone, ethanol (EtOH) and ethyl acetate were purchased from China National Pharmaceutical Group (Shanghai, China). Acetonitrile (Hromatographic grade) was purchased from TEDIA Company (Fairfield, OH, USA).

All solvents and chemicals used in this research were commercial products. Ethanol, N, N−dimethylformamide (DMF), mEthanol, chloroform, ethyl acetate, acetone, acetonitrile, zinc chloride (ZnCl₂), p−benzenedicarboylic acid (p−H₂BDC), propylene carbonate (PC), Ethanol, lithium perchlorate (LiClO₄) and potassium carbonate were purchased from Sinopharm Chemical reagent Co. Ltd. (Shanghai, China), 2,5−Dibromoanisole, 4−pyridineboronic acid, (beta−4)−platinum and tris(dibenzylideneacetone)dipalladium(0), 4−Bromomethylbenzoic acid, and 1,4−Dioxane were bought from Energy Chemical (Shanghai, China).

X60-steel samples were applied to investigate the necessitated measurements, in which the metal composition in wt.% was found as follows: C, 0.23; Si, 0.38; Mn, 1.41; V, 0.06; Nb, 0.05; Ti, 0.04; P, 0.025; S, 0.015, and remainder Fe. The X60-steel samples were scratched with various SiC sheets (grades 400–1800), and acetone was used for metal rinsing, cleaned by bidistilled water, and then slightly dehydrated before soaking. Hydrochloric acid (Analar grade: 1.0 M, 37%) served as the corrosive medium.
All required chemicals and solvents, such as tetrahydrofuran, ethyl acetate, and diethyl ether, may be utilized with no need for purification and were obtained from Sinopharm Chemical Reagent Co., Ltd., Beijing, China. N¹,N¹-dimethylpropane-1,3-diamine (≥99.0%) and Perfluoro-1-hexane sulfonyl fluoride (≥98.0%) were obtained from “Aladdin Industrial corporation” company, Shanghai, China. 1,2-Diiodoethane (≥95.0%), 1,4-diiodobutane (≥97.0%), and 1,6-diiodohexane (≥99.0%) were obtained from Alfa Aesar China Co., Ltd., Shanghai, China. ¹H (600 MHz), ¹³C (151 MHz), and ¹⁹F NMR (565 MHz) NMR spectra were obtained in CD₃OD, DMSO-d6, or CDCl₃ on a “Bruker AVANCE instrument” by using the inner standard as tetramethylsilane, ≥99.0%.

1,4-Cyclohexanedimethanol, 1,5-pentanediol, 2,2-dimethoxypropane, and p-toluene sulfonic acid (PTSA) were purchased from the Aladdin Reagent Company (Shanghai, China). Cyclohexane, ethyl acetate, triethylamine, and n-hexane were bought from Sinopharm Chemical Reagent Company (Shanghai, China) and distilled with calcium hydride. NaAlO₂ (57.1% Al₂O₃ and 37.2% Na₂O) and NaOH (96 wt%) were gained from Sinopharm Chemical Reagent Company (Shanghai, China) and fumed silica was obtained from the Shanghai Tengmin Industrial Company (Shanghai, China). Commercial H type ZSM-5 zeolite with a Si/Al molar ratio of 12, denoted as C-Z5, was acquired from Nankai University Catalyst Co., Ltd. (Tianjin, China). Low-density polyethylene (LDPE) powder used as a model feedstock in the cracking reaction was provided by Alfa Aesar (Stock #42607) (Tianjin, China).

Xinli No. 7 (XL7) specimens were purchased from a supermarket in Weixian, Hebei Province when they reached the maturity of the respective commercial harvesting period and immediately stored at 4 °C after sampling for subsequent processing analysis. The fruits with diseases, mechanical damage, and immaturity were removed. Hydrochloric acid, sulfuric acid, methanol, anhydrous ethanol, ethyl acetate, zinc acetate, sodium carbonate, sodium bicarbonate, sodium nitrite, aluminium nitrate, sodium chloride, sodium hydroxide (analytically pure), sucrose, potassium ferricyanide, phenolphthalein, polyethylene glycol (PEG 6000, analytically pure), acetic acid–sodium acetate buffer solution (0.1 mol/L, pH = 5.5), Triton X–100, catechol, and potassium persulfate were purchased from Sinopharm Chemical Reagent Co., Ltd. (Beijing, China). Folinol (1 mol/L), gallic acid, rutin, 1,1-diphenyl-2-trinitrophenylhydrazine (DPPH), and 2,2′-diazo-di-3-ethylbenzothiazolin-6-sulfonic acid (ABTS) were bought from Soleibao Biotechnology Co., Ltd. (Shanghai, China).