This molecule is a 1,2-diazole (pyrazole) ring bearing three substituents. Pyrazole is a five-membered aromatic ring composed of three carbon atoms and two adjacent nitrogen atoms. The ring is numbered so that the nitrogen atoms occupy positions 1 and 2.
Three substituents are present:
- At the ring's first nitrogen (N-1): A sec-butyl substituent. The carbon bonded to N 1 bears a methyl group and an ethyl group, with no specified stereochemistry.
- At the carbon-4: A carboxylic acid group (-COOH).
- At the carbon-5: An amino substituent (-NH2).