Which of the following would be considered a diphtheroid?

Which of the following is true about Nocardia spp.?

What is the structure of compound C for the following reaction scheme?

Which of the following molecules is expected to be the MOST reactive toward electrophilic aromatic substitution?

Of the following strategies for the synthesis of 4-iso-butylanisole, which is expected to be the best route?

What is the structure of 2,4-dichloro-m-xylene

For the enzymatic degradation of 4-chlorobenzoic acid shown, what is the intermediate A?

For the following monobromination reaction, what is the expected product? 

Which of the following structures is NOT a contributing resonance structure A that explains the regiochemistry for the monobromination of toluene?

From the reaction coordinate shown below, which compound is formed faster, A or B?