The molecular formula C2H2O2 may refer to:
The molecular formula C2H2O2 may refer to: Acetylenediol, or ethynediol: frameless|upright=0.424|alt=HO-C2-OH Glyoxal: frameless|upright=0.139|alt=(COH)2 Acetolactone: frameless|upright=0.148|alt=H2C(O)CO
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).