Robuta

https://www.sigmaaldrich.com/US/en/product/aldrich/412929
Aldrich-412929; 2-Ethyl-3-hydroxy-4H-pyran-4-one 0.99; CAS No.: 1110651; Synonyms: Ethyl maltol; Linear Formula: C7H8O3; Empirical Formula: C7H8O3; find...
ethylhydroxypyranone