Chemistry with Medicinal Chemistry [MSc] postgraduate personal statement example

Personal statement example

Every Tuesday at the community pharmacy where I work as a dispensing assistant, I check the weekly methotrexate prescriptions with particular care. The tablets are small and yellow, and the label must say clearly that they are taken once a week, not daily. The pharmacist once explained to me why the dose matters so much. Methotrexate inhibits dihydrofolate reductase, and the same mechanism that makes it useful can make an error dangerous. Since then I have looked at the medicines I handle less as products and more as molecules designed to do one job in a crowded biological system. I want to study medicinal chemistry at postgraduate level to understand how that design happens, and to become capable of contributing to it.

My undergraduate degree in chemistry gave me a broad foundation. Organic synthesis and spectroscopy suited me best. I enjoyed working out a structure from a set of NMR, IR and mass spectra, and I found that reaction mechanisms made more sense to me once I started drawing them repeatedly by hand. A second-year option on biological chemistry introduced enzyme kinetics and the idea of competitive inhibition, and it was the first time the organic chemistry I had learned seemed connected to the medicines on the pharmacy shelves.

For my final-year project I prepared a small series of amide analogues based on a simple aryl sulfonamide fragment. I varied the amine component to change size and polarity. Over two terms I made seven compounds using standard coupling conditions, purified them by column chromatography and characterised them by proton and carbon NMR and LC-MS. Two reactions with hindered amines gave poor yields. Switching coupling reagent improved one but not the other, and I reported that honestly rather than leaving it out. The project had no biological testing, but I calculated logP values and discussed how the series might be used to explore structure–activity relationships. I received a strong mark for the report, and the work taught me patience as well as technique. I also learned to keep a lab notebook that someone else could follow.

I have read beyond my course to prepare. Graham Patrick's An Introduction to Medicinal Chemistry helped me understand pharmacokinetics alongside binding, and I found Lipinski's rule of five a useful starting point for thinking about oral drugs. I was interested to learn that many approved drugs fall outside it. Reading about the development of statins showed me how long the path is from an enzyme target to a medicine that patients collect from a counter every month.

My pharmacy job has given me other skills. I work to strict standard operating procedures, double-check controlled drug entries with the pharmacist and explain collection arrangements to customers who are often worried or tired. Accuracy under time pressure is routine there, and I think it will translate well into laboratory work. Outside work I marshal at my local parkrun most Saturdays and boulder twice a week. Bouldering has given me an unexpected habit that suits chemistry: looking at a problem, trying a route, failing and adjusting one hold at a time.

On a taught master's I hope to strengthen my synthetic chemistry, learn how computational methods support drug design and gain more experience of the analytical techniques used in pharmaceutical work. In the longer term I would like to work in a medicinal or process chemistry role. I would be making the kinds of compounds that eventually become something like those weekly yellow tablets, which have to be safe, effective and understood.