Organic chemistry
Paracetamol synthesis (acetylation of 4-aminophenol)
A classic first-year acetylation: weigh out reagents by equivalents, find the limiting reagent, crystallise the product and compare actual with theoretical yield.
Example laboratory protocols
Three free, fully worked bachelor laboratory protocols — paracetamol synthesis, caffeine extraction and the Bradford protein assay — with reagents, steps, safety notes and calculations. Every example is public, needs no account to read, and can be copied into your own library in one click and edited freely.
Analytical chemistry
Caffeine extraction from tea and UV analysis
Brew, extract and quantify caffeine: liquid–liquid extraction, phase separation, dilution to the working range, absorbance at 272 nm and a recovery calculation.
Biochemistry
Bradford protein assay with a BSA calibration curve
A 96-well Bradford assay: BSA standards by serial dilution, blanks and triplicates, a plate layout, absorbance at 595 nm and an unknown read off the calibration curve.
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