Organic Chemical Materials

Pyrazoline is a benzodiazepine with an elimination half-life of approximately 17 hours and no metabolites detected in human serum and urine; therefore, pyrazoline may not be detectable without instrumental analytical techniques .

(3R,4R)-3-hydroxy-4-(hydroxymethyl)pyrrolidine-1-carboxylate tert-butyl ester is a chemical substance with the chemical formula C10H19NO4.

Heavy aromatics refer to mixed aromatics with molecular weight greater than xylene. It mainly comes from reforming heavy aromatics, pyrolysis gasoline heavy aromatics and coal tar. It is a kind of mixed aromatics with C9 aromatics as the main component. It can be directly used as raw materials for gasoline, high boiling solvent, petroleum resin, carbon black, etc. The main components can also be separated by separation method for further utilization. With the rapid development of China's oil and coal processing industry, the output of heavy aromatic oil has increased significantly. The composition of heavy aromatics is very complex. According to the report of relevant analysis results, there are more than 100 components. Although the content of each component changes with the change of production process parameters and actual operation, its main components and content are basically stable. Main components: cumene, n-propyl benzene, ethyl toluene, trimethylbenzene, etc

It can be used as a local anesthetic and vasoconstrictor, but it is mainly used as an intermediate of neocriptine.

4-Phenyl-3-enal is a chemical substance with the chemical formula C10H10O.