Fig. 2
From: Assessment of geographical origin and production period of royal jelly by NMR metabolomics
2D 1H–13C HSQC NMR spectrum of a representative Royal Jelly sample. The figure reports the assignment of the most intense signals. The labels 10-HDA, URI, NIC, GUA and ADE refer to 10-hydroxy-2-decenoic acid and uridinic-, nicotinamidic-, guanosinic- and adenosinic-like structures, respectively. The green ellipse in the bottom-right side includes the chemical structure of 10-HDA compound