Liu, Wei et al. published their research in Harbin Shangye Daxue Xuebao, Ziran Kexueban in 2016 | CAS: 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. Pyrazole rings have been used as core components of several leading non-steroidal anti-inflammatory drugs (NSAIDs) and antihypertensive drugs. It has also been found to be useful as a bifunctional ligand for metal catalysis.Quality Control of 1-Ethyl-1H-pyrazol-5-amine

Determination of volatile component from Patrinia villosa (Thunb.) Juss. and Patrinia scabiosaefolia Fisch by GC- MS was written by Liu, Wei;Jia, Shao-hua;Xiang, Zheng. And the article was included in Harbin Shangye Daxue Xuebao, Ziran Kexueban in 2016.Quality Control of 1-Ethyl-1H-pyrazol-5-amine This article mentions the following:

To analyze the chem. constituents in the essential oil of Patrinia villosa (Thunb.) Juss and Patrinia scabiosaefolia Fisch. The essential oil obtained by the hydrodistillation of the leaves of Patrinia scabiosaefolia Fisch and Patrinia villosa( Thunb.) Juss. were analyzed by a combination of capillary GC/MS analytic techniques. Results indicated that 54 components comprising 94.56% of essential oil in leaves of P. scabiosaefolia Fisch and 36 components comprising 89.87% of oil in leaves of P. Villosa Juss. were identified, resp. 9 Common constituents, hexanal, 2-Pentylfuran, benzeneacetaldehyde, α-Ionene, 1, 2, 3, 4- Tetrahydro-1, 6, 8-trimthylnaphthalene, 1, 2, 3, 4-Tetrahydro-1, 5, 7-trimethylnaphthalene, β-Damascenone, Hexahydrofarnesylacetone and palmitic acid, were identified in two species of Baijiangcao. This was the first report to make a comparison of essential oil constituents in two species of BaiJiangCao, which could have identification between the two leaves on essential oil ingredient, and even could give a support for quality control. In the experiment, the researchers used many compounds, for example, 1-Ethyl-1H-pyrazol-5-amine (cas: 3528-58-3Quality Control of 1-Ethyl-1H-pyrazol-5-amine).

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. Pyrazole rings have been used as core components of several leading non-steroidal anti-inflammatory drugs (NSAIDs) and antihypertensive drugs. It has also been found to be useful as a bifunctional ligand for metal catalysis.Quality Control of 1-Ethyl-1H-pyrazol-5-amine

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics