DDF may refer to:
==Biology and medicine== Digestive Disorders Foundation, a British medical research charity (N,N-dimethyl-amino)-benzenediazonium-fluoroborate, a photoaffinity probe that competes with acetylcholine for receptor binding Sulfoxone, an anti-leprosy drug sold under "DDF" brand
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).