Analysis of volatile constituents of Baimaohou (Camellia sinensis L.) by gas chromatography-mass spectrum was written by Zhuang, Wuyoung;Cai, Jibao;Su, Qingde. And the article was included in Asian Journal of Chemistry in 2005.Application of 3528-58-3 This article mentions the following:
Volatile oil of Baimaohou (Camellia sinensis L.) was obtained by simultaneous distillation-solvent extraction Following, the essential oil was analyzed by gas chromatog.-mass spectrum. 48 Components at least were identified, constituting approx. 74% of the oil. The main constituents of the essential oil were phytol (16.4%) and 5,6,7,7a-tetrahydro-4,4,7a-trimethyl-2(4H)-benzofuranone (10.6%), a very expensive flavor material. In the experiment, the researchers used many compounds, for example, 1-Ethyl-1H-pyrazol-5-amine (cas: 3528-58-3Application of 3528-58-3).
1-Ethyl-1H-pyrazol-5-amine (cas: 3528-58-3) belongs to pyrazole derivatives. Pyrazole has two ring nitrogen atoms in which N1 is pyrrolic and N2 is pyridine-like. The N1 nitrogen is not reactive but is deprotonated in the presence of a base-forming anion. Protonation of pyrazole in strong acid leads to pyrazolium cations, which undergo electrophilic substitution preferentially at C3 rather than C4. The pyrazole anion is not reactive toward nucleophiles but is mostly reactive to electrophiles.Application of 3528-58-3
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics