Fabbri, D.; Mongardi, M.; Montanari, L.; Galletti, G. C.; Chiavari, G.; Scotti, R. published the article 《Comparison between CP/MAS 13C-NMR and pyrolysis-GC/MS in the structural characterization of humins and humic acids of soil and sediments》. Keywords: humin mol structure aquatic sediment MNR; humic acid structure soil pyrolysis GCMS.They researched the compound: 3-Methyl-1H-pyrrole( cas:616-43-3 ).Recommanded Product: 616-43-3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:616-43-3) here.
The chem. structure of humins (HUs) and humic acids (HAs) of terrestrial and marine environments was investigated by cross-polarization magic angle spinning 13C-NMR spectroscopy and pyrolysis-gas chromatog./mass spectrometry. Samples of HUs and HAs were obtained from sediments of the Adriatic Sea, the Lagoon of Ravenna (Adriatic Sea), and the Bubano Lake as well as from an agricultural soil. HUs showed pyrograms and NMR spectra different from those of related HAs. According to NMR spectra HUs were more aliphatic and contained fewer carboxyl groups than HAs, while pyrolyzates of HUs were characterized by higher levels of products arising from carbohydrates and lower levels of lignin methoxyphenols with respect to HAs. The relative content of paraffinic carbons determined by NMR was in good agreement with the relative abundance of unbranched aliphatic hydrocarbons released by pyrolysis. Both techniques evidenced the importance of polymethylene structures in HUs.
Different reactions of this compound(3-Methyl-1H-pyrrole)Recommanded Product: 616-43-3 require different conditions, so the reaction conditions are very important.
Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate