DP Chemistry (last assessment 2024)
Question 19M.3.sl.TZ1.17a(i)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.sl.TZ1.17a(i) |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | Draw | Question number | a(i) | Adapted from | N/A |
a(i).
[Maximum mark: 1]
19M.3.sl.TZ1.17a(i)
This question is about antiviral drugs.
Oseltamivir, used for the treatment of severe flu, is inactive until converted in the liver to its active carboxylate form.
(a(i))
Draw a circle around the functional group that can be converted to the carboxylate by hydrolysis.
[1]
Markscheme
[✔]
Note: Accept circles that include the alkyl side chain.
Examiners report
Many students erroneously identified the amide as the required group, failing to realise that its hydrolysis would give the carboxylate ion of the side chain lost to the drug.
