Gao, Yaojun published the artcileSynthesis of Pyrazolo[5,1-d][1,2,3,5]tetrazin-4(3H)-ones, Name: Ethyl 5-amino-3-methyl-1H-pyrazole-4-carboxylate, the publication is Journal of Combinatorial Chemistry (2010), 12(1), 69-74, database is CAplus and MEDLINE.
A solid-phase synthesis of 5-aminopyrazoles I (R1 = H, CN, EtO2C, Ph; R2 = H, Me, Ph) has been developed and applied to the preparation of pyrazolo[5,1-d][1,2,3,5]tetrazin-4(3H)-ones II (R3 = n-hexyl, Ph, 4-ClC6H4, PhCH2, PhCH2CH2). In this strategy, 5-aminopyrazoles I were converted into pyrazolo[5,1-d][1,2,3,5]tetrazines II in one-pot via diazotization followed cyclocondensation with isocyanates R3NCO.
Journal of Combinatorial Chemistry published new progress about 23286-70-6. 23286-70-6 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Amine,Ester, name is Ethyl 5-amino-3-methyl-1H-pyrazole-4-carboxylate, and the molecular formula is C7H11N3O2, Name: Ethyl 5-amino-3-methyl-1H-pyrazole-4-carboxylate.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics