Robuta

https://www.thermofisher.com/order/catalog/product/189720250
3-Methyl-2-oxobutanoic acid, sodium salt, 98+%. This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio....
oxobutanoic acidsodium saltmethylg
https://www.ebi.ac.uk/chebi/CHEBI:228725
dihydroyl
https://www.ebi.ac.uk/chebi/CHEBI:33574
oxobutanoic acidmethylthiochebi