Flow injection gas chromatography with sulfur chemiluminescence detection for the analysis of total sulfur in complex hydrocarbon matrixes was written by Hua, Yujuan;Hawryluk, Myron;Gras, Ronda;Shearer, Randall;Luong, Jim. And the article was included in Journal of Separation Science in 2018.Application In Synthesis of 2,5-Dimethylthiophene The following contents are mentioned in the article:
A fast and reliable anal. technique for the determination of total sulfur levels in complex hydrocarbon matrixes is introduced. The method employed flow injection technique using a gas chromatograph as a sample introduction device and a gas phase dual-plasma sulfur chemiluminescence detector for sulfur quantification. Using the technique described, total sulfur measurement in challenging hydrocarbon matrixes can be achieved in <10 s with sample-to-sample time <2 min. The high degree of selectivity and sensitivity toward sulfur compounds of the detector offers the ability to measure low sulfur levels with a detection limit in the range of 20 ppb weight/weight S. The equimolar response characteristic of the detector allows the quantitation of unknown sulfur compounds and simplifies the calibration process. Response is linear over a concentration range of five orders of magnitude, with a high degree of repeatability. The detector’s lack of response to hydrocarbons enables direct anal. without the need for time-consuming sample preparation and chromatog. separation processes. This flow injection-based sulfur chemiluminescence detection technique is ideal for fast anal. or trace sulfur anal. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Application In Synthesis of 2,5-Dimethylthiophene).
2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Application In Synthesis of 2,5-Dimethylthiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem