bids are invited for chemistry chem bismuth acetate , ibuprofen , sildenafil , ellagic acid , phosphate buffer saline ph 7.4 , 1 2 bis4-pyridylethane , tris-aminophenyl amine , pyromellitic dianhydride , 4 4 biphenuldibronic acid , 1 4 benzenedimethanol , p phenylenediamine , 1 4 di imidazole 1 yl benzene , zirconyl chloride octahydrate , dexamethasone , 11 diphenyl 2 picrylhydrazyl free radical , bismuth nitrate , isopropyl alcohol , tetrabutylammonium hydrogen sulphate 99 percent , tert-butyl methyl ether gc grade , acetone , methanol , ethanol , standard gallic acid , titanium iso propoxide bismuth acetate, ibuprofen, sildenafil, ellagic acid, phosphate buffer saline ph 7.4, 1 2 bis 4-pyridyl ethane, tris aminophenyl amine, pyromellitic dianhydride , 4 4 biphenuldibronic acid, 1 4 benzenedimethanol, p phenylenediamine, 1 4 di imidazole 1 ylbenzene, zirconyl , ammonium acetate total quantity : 26