Analysis of nitrogenous organic compounds from mainstream cigarette smoke using low-temperature solvent extraction followed by comprehensive two-dimensional gas chromatography with high-resolution time-of-flight mass spectrometry was written by Xiang, Zhangmin;Cai, Kai;Zhou, Shuping;Geng, Zhaoliang;Pan, Wenjie. And the article was included in Journal of Separation Science in 2015.Recommanded Product: 2-Isopropylpyridine This article mentions the following:
A method involving comprehensive two-dimensional gas chromatog. coupled to high-resolution time-of-flight mass spectrometry was developed and applied to the anal. of nitrogenous organic compounds present in mainstream cigarette smoke trapped on self-designed equipment. The samples were prepared using low-temperature solvent extraction under liquid nitrogen and analyzed by comprehensive two-dimensional gas chromatog. with high-resolution time-of-flight mass spectrometry. Important exptl. parameters, such as the type and volume of the extraction solvent and flow rate of smoking, were optimized to improve the anal. parameter. The results indicated that 180 mL of di-Et ether in the low-temperature solvent extraction apparatus system with a 4 mL/min smoke flow rate were the optimal conditions. Then, 85 nitrogenous organic compounds were identified and quantified using a mass spectral library search, accurate mass ion and N-rules of a mol. formula for nitrogen compounds Finally, a comparison of the low temperature solvent extraction and Cambridge filter pad method indicated that more peaks, a higher peak volume and better repeatability were obtained using the low-temperature solvent extraction method. In the experiment, the researchers used many compounds, for example, 2-Isopropylpyridine (cas: 644-98-4Recommanded Product: 2-Isopropylpyridine).
2-Isopropylpyridine (cas: 644-98-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Recommanded Product: 2-Isopropylpyridine