Dorn, Helmut published the artcileElectrophilic substitution of 3(5)-aminopyrazole, HPLC of Formula: 3553-12-6, the publication is Justus Liebigs Annalen der Chemie (1967), 141-6, database is CAplus.
3(5)-Aminopyrazole (I) was halogenated to give 3(5)-amino-4-halopryazole. Acetylation of I yielded 3(5)-acetamidopyrazole (II), as shown by ir spectroscopy. II was nitrated to give 3(5)-acetamido-4-nitropyrazole, resp. The tautomerism of I and the site of the preferred electrophilic substitution are discussed based on the N.M.R. spectra.
Justus Liebigs Annalen der Chemie published new progress about 3553-12-6. 3553-12-6 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Amine,Amide, name is 3-Acetamidopyrazole, and the molecular formula is C5H7N3O, HPLC of Formula: 3553-12-6.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics