Each non-peptide hormone entry presents the name, description, IUPAC name, canonical and isomeric smile, melting point, LogP, water solubility, molecular weight, molecular formula, corresponding receptor, and external links to different databases such as PubChem, PDB, KEGG, HMDB, DrugBank etc.
The spectrum of the silylated compound is characterized by a low intensity molecular ion peak at m/z 656, corresponding to a molecular formula C26H32O6 and base peak at m/z 641 [M-15]+, This molecular formula corresponds to a flavanone with one prenyl group, one hydroxylated pentyl group, two OH and one OCH3 groups.
The HRESIMS data (m/z 211.1328 [M+H]+, calcd for 211.1329) of 3 showed the molecular formula C12H18O3, corresponding to four degrees of unsaturation.
at m/z 499.3053 [M − H]− (calcd for C30H43O6, 499.3060) indicated the molecular formula C30H44O6, corresponding to nine degrees of unsaturation.
The two concepts of database, completeness and density, have been introduced in this study to describe the properties of molecular formula databases, corresponding to the parameters α and γ1 3 in the classification scheme shown in Fig. 3, respectively.
Each node is labeled with the molecular formula of the corresponding ion, and each edge is labeled with the molecular formula of the corresponding loss.
Also recall that each node (v in V) is the molecular formula of the corresponding hypothetical fragment, whereas an edge (u, v) corresponds to a loss (v-u).
Once the flavorist has "recorded" his subjective impressions of a fragrance, an algorithm produces an approximate molecular formula for the corresponding flavor.
Its molecular formula of C4H6N2O2, corresponding to 3 degrees of unsaturation, was determined by EI-MS (M+ m/z 114) in conjunction with the NMR spectra.
