What's in a Medicine WM Storylines 4 and 5

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What is mass spectrometry used for?
Used to determine molecular structures
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What is infrared spectroscopy used for?
The frequency of ir rad absorbed gives info about functional groups
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What does Nuclear Magnetic Resonance Imaging (NMR) tell us?
Investigates chemical environments of particular element’s nuclei
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In mass spectroscopy A substance is ionised by a beam of electrons from a heated filament. What is the general equation for this and what is the next stage?
X(g) + e- > X+(g) + 2e-
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Some medicines are ‘natural products’. What does this mean?
They come directly from plants
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How do chemists try to produce simple active compounds artificially?
Once the structure is known, simple inorganic molecules are synthesised directly from their elements
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How do chemists try to produce complex active compounds artificially? Give an example
These can be made from similar compounds already known that can be modified. Phenol is a –COOH short of salicylic acid
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What was the problem with the first ‘aspirin’?
It causes irritation in the mouth, gullet and stomach
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How was it developed?
Felix Hoffman modified the structure to reduce side effects = 2ethanoxybenzoic acid = aspirin. It is an ester
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Other cards in this set

Card 2

Front

What is infrared spectroscopy used for?

Back

The frequency of ir rad absorbed gives info about functional groups

Card 3

Front

What does Nuclear Magnetic Resonance Imaging (NMR) tell us?

Back

Preview of the front of card 3

Card 4

Front

In mass spectroscopy A substance is ionised by a beam of electrons from a heated filament. What is the general equation for this and what is the next stage?

Back

Preview of the front of card 4

Card 5

Front

Some medicines are ‘natural products’. What does this mean?

Back

Preview of the front of card 5
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