Question 1

C5H9N3

 

The amine groups make the compound water soluble as they are able to form hydrogen bonds with water molecules.

Question 2

C16H21N3, ring structures are present in both molecules.

Question 3

Drugs that cause a physiological response in the body:
1) Aspirin
2) Amphetamine
3) Morphine
4) Estrogen

Drugs that inhibit the growth of substances that cause infections:
1) Keflex
2) Penicillin

Question 4

4a)
Herbal supplements manufacturers are responsible for the safety and also the quality of their products.They must ensure that their products do not contain prohibited items and do not claim to treat illnesses or diseases.Proper labelling must be present providing enough information on the packaging for consumers to review when they purchase or consume the products.

4b)
In Singapore,Health supplements do not need any licensing or approval by Health Sciences Authority (HSA) as unlike medicine,they are not assessed for their effectiveness.Although there are no legislations,HSA has provided guidelines for manufacturers to follow.