BitterDB id=828 Detailed experimental validation described in the associated resource.
References for the compound bitterness
Kohl S, Behrens M, Dunkel A, Hofmann T, Meyerhof W (2013). Amino acids and peptides activate at least five members of the human bitter taste receptor family. J Agric Food Chem 61(1): 53-60. PubMed 23214402