Methylene Blue: The First Fully Synthetic Drug and Its Second Life in the Laboratory
Synthesised in 1876 as a dye for cotton, methylene blue became the first synthetic compound used as a drug and never left the laboratory. This is its phenothiazinium chemistry, its two-electron redox couple and the analytical methods still built around it.
The Racetam Skeleton: Why 2-Oxo-1-Pyrrolidine Acetamide Became a Chemical Family
A five-membered lactam and a short acetamide arm are all that define the racetam skeleton. This is what the 1969 UCB patent actually claimed, where the substituents go, and why levetiracetam proves that a shared core predicts nothing about a target.
Working With Milligram Quantities: A Practical Laboratory Guide
Weighing a few milligrams, dissolving them and storing the result looks like three trivial steps. Each one has a measurable error budget, and published stability studies show which of them actually degrades a stock solution.