Amoxicillin pharmacological name?

If you mean the pharmacologic class:
- Amoxicillin is an aminopenicillin, a beta-lactam antibiotic. It inhibits bacterial cell-wall synthesis by binding to penicillin-binding proteins.

If you want the chemical/IUPAC name:
- IUPAC name: (2S,5R,6R)-6-[(R)-2-amino-2-(p-hydroxyphenyl)acetyl]amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid.
- The common salt/form used in many preparations is amoxicillin trihydrate.

Other notes:
- Generic/international nonproprietary name (INN) is amoxicillin.
- Brand names include Amoxil, etc. If you had a different interpretation of “pharmacological name,” tell me and I’ll tailor the answer.