Safety of 3-Methyl-1H-pyrrole. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Alkylpyrroles in a kerogen pyrolysate: evidence for abundant tetrapyrrole pigments. Author is Sinninghe Damste, Jaap S.; Eglinton, Timothy I.; de Leeuw, Jan W..
C1-C6 alkylated pyrroles were identified as major constituents of the flash pyrolyzate of a kerogen from the Miocene Monterey Formation (California, USA) using gas chromatog. with an N-selective detector and gas chromatog.-mass spectrometry. The major alkylpyrroles identified are 2,3,4-trimethylpyrrole, 3-ethyl-4-methylpyrrole, 2,3-dimethyl-4-ethylpyrrole, 2,4-dimethyl-3-ethylpyrrole, and 3-ethyl-2,4,5-trimethylpyrrole. The alkyl substitution patterns of the alkylpyrroles strongly suggest an origin from tetrapyrrole pigments. Evidence for this hypothesis was provided by flash pyrolysis of the tetrapyrrole pigments chlorophyll-a, protoporphyrin-IX di-Me ester, and bilirubin, which yielded alkylpyrroles with a similar isomer distribution. Quant. pyrolysis using a polymer internal standard of both the kerogen and the tetrapyrrole pigments revealed that ca. 5% of the kerogen consists of macromolecularly bound tetrapyrrole pigments or that this fraction contains ca. 5% insoluble tetrapyrrole salts. These results show that in specific cases tetrapyrrole pigments can contribute significantly to the sedimentary organic matter.
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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
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