Sodium sulphate

Citric acid, sodium phosphate monobasic monohydrate, and sodium phosphate dibasic heptahydrate were purchased from Fisher Chemicals (Loughborough, U.K.). Glacial acetic acid was purchased from VWR (Lutterworth, U.K.). Sodium hydroxide pellets, sodium chloride, Tris‐hydrochloride, Tris‐base, sodium sulphate, sulphuric acid, hydrochloric acid, and glycine were purchased from Sigma‐Aldrich (Gillingham, U.K.).

The reagents N-Bromosuccinimide, N-phenylmorpholine, and sodium sulphate were of biochemical or reagent grade purity, obtained from Sigma-Aldrich (USA) and Component-Reactive Ltd (Russia). Solvents hexane, ethyl acetate and methanol of HPLC grade purity were purchased from Biosolve (The Netherlands). Tetrahydrofuran, dichloromethane and diethyl ether were obtained from Russian commercial suppliers and purified by distillation before the experiments. All-trans-retinal (A1) was obtained from Sigma-Aldrich (USA). Plastic 1-ml microcentrifuge tubes and disposable Pasteur pipettes from Eppendorf (Germany) were used. All reactions with reagents sensitive to oxygen and moisture were carried out in dry argon atmosphere. In the experiments with photosensitive compounds, care was taken to protect the samples from light by means of aluminium foil wrapped around the equipment.

N-Methyl-N-trimethylsilyl-trifluoroacetamide (MSTFA), methoxyamine hydrochloride, and pyridine were purchased from Sigma- Aldrich Inc. (St. Louis, MO, USA). LC or GC grade methanol, isopropanol, chloroform, acetonitrile, and toluene were purchased from Merck (Darmstadt, Germany). Standard alkane series (C10-C40) and sodium sulphate were products of Sigma–Aldrich Inc. (St. Louis, MO, USA). Water was purified by a Milli-Q system (Millipore, Billerica, MA, USA).

Methyl gallate, borax, dimethyl sulphate, dipropyl sulphate, sodium hydroxide, sulphuric acid, chloroform, sodium chloride and sodium sulphate were purchased from Sigma-Aldrich (St Louis, MO, USA) for the synthesis of M3OMG and P3OMG. Bovine serum albumin and a kit for protein measurement were purchased from ZiestChem Company (Tehran, Iran). 5,5-dithiobis(2-nitrobenzoic acid), ethylenediaminetetraacetic acid, nitro blue tetrazolium chloride, potassium dihydrogen phosphate, reduced glutathione, sodium dihydrogen phosphate, trichloroacetic acid, thiobarbituric acid, hydrogen peroxide, sodium carbonate, hydroxylamine chloride, ketamine, lidocaine, xylazine were purchased from Sigma-Aldrich Chemical Company, (St. Louis, MO, USA). Other chemical reagents and solvents were of analytical grade or pure and were purchased from Merck Chemical Company (Darmstadt, Germany).

Vanillin (VL) (99%), ethylene carbonate (EC) (98%), potassium carbonate (K₂CO₃, 99%), sodium sulphate (Na₂SO₄), dibutyltin oxide (DBTO) (>98%), 2‐aminoethanol (>99%), trimethylolpropane tris [poly (propylene glycol), amine terminated] ether (Jefm) (average Mn of 440 g mol⁻¹), trimethylolpropane triglycidyl ether (TMPTGE), 1,2‐dimethylimidazole, and dibutyltin dilaurate (DBTDL) (>95%) were purchased from Sigma‐Aldrich. N,N‐dimethylformamide (DMF, ACS, Reag. Ph. Eur.), ethyl acetate (EtOAc, ACS, Reag. Ph. Eur.), and ethanol (EtOH) were purchased from VWR Chemicals. All chemicals and reagents were used as received.

Bisphenol A (≥99%), Bisphenol AF (≥99%), Bisphenol AP (≥99%), bisphenol B (≥98%), bisphenol BP (≥98%), bisphenol C (≥98%), bisphenol E (≥98%), bisphenol F (≥98%), bisphenol G (≥98%), bisphenol M (≥99%), bisphenol P (≥99%), bisphenol PH (≥99%), bisphenol S (≥98%), bisphenol TMC (≥97%), and bisphenol Z (≥99%) were purchased from Sigma-Aldrich. Stock standard solutions (100 mg/L) were individually prepared by dissolving standard compounds in acetonitrile. A stock standard mixture containing all the individual standards (100 mg/L) was also prepared and stored at −20 °C. Working solutions for calibrations were prepared by serial dilution of the stock standard mixture with acetonitrile (Sigma-Aldrich). Beta-glucuronidase from E. coli (200 units/mL) was purchased from La Roche AG group. Bis(trimethylsilyl)trifluoroacetamide (BSTFA) with 1% of trimethylchlorosilane (TMCS) solution was used for BPs derivatization and was purchased from Sigma-Aldrich. Ammonium acetate (98%), calcium chloride (CaCl₂) (≥99%), creatinine hydrochloride (≥97%), ammonium phosphate dibasic (≥99%), magnesium chloride hexahydrate (≥99%), potassium chloride (≥99%), sodium sulphate (≥99%), urea (≥98%), acetone (99.9%), formic acid (≥95%), and methanol (99.9%) were purchased from Sigma-Aldrich. Nanopure water was provided by an ultrapure water system (ariumPro, Sartorius, Germany).