The answer
io.github.cyanheads/pubchem-mcp-server
Top verified match: it matches your intent, corroborated across multiple registries.
fresh · published 13d ago · verified 2026-07-11tested · static-verifiedsigned passport ✓score 41/100
claude mcp add pubchem-mcp-server -- npx -y @cyanheads/pubchem-mcp-server