Ou, Shuo-jun published the artcileDetermination of seven kinds of alkylamines in food contact plastic materials by amidation coupled with high performance liquid chromatography-quadrupole time-of-flight mass spectrometer, Name: 4,4-Diaminodicyclohexyl methane, the publication is Fenxi Huaxue (2020), 48(3), 413-422, database is CAplus.
A high performance liquid chromatog.-quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF/MS) method for determination of seven kinds of alkylamines was established. Samples were amidated with 0.4% benzyl chloroformate (Cbz-Cl) in acetonitrile-sodium carbonate solution (50:50, V/V). The amidated conditions, including concentration of sodium carbonate solution (1.5%, m/V), benzyl chloroformate ratio and amount of sodium chloride (1.5 g), were optimized by response surface methodol. Under the optimized chromatog. and mass spectrometer conditions, the data were collected with electrospray ionization (ESI) sources under pos. ion mode. The calibration curves of seven kinds of alkylamines showed good linearity in concentration range of 1.0-500μg/L(R2 > 0.9957). The average recoveries were 82.0-108.0%, the limits of detection and quantification were 0.5-1.0μg/kg and 2.0-4.0μg/kg, resp., and the relative standard deviations (RSDs) were 3.5-6.8%. This method is efficient and easy to be operated, and has good sensitivity, high precision and accuracy in the determination of seven alkylamines in food contact plastic materials.
Fenxi Huaxue published new progress about 1761-71-3. 1761-71-3 belongs to quinuclidine, auxiliary class Ploymers, name is 4,4-Diaminodicyclohexyl methane, and the molecular formula is C13H26N2, Name: 4,4-Diaminodicyclohexyl methane.
Referemce:
https://en.wikipedia.org/wiki/Quinuclidine,
Quinuclidine | C7H13N | ChemSpider