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Upstream product

• 6994-25-8 3-amino-4-pyrazolecarboxylic acid ethyl ester 
• 2284-20-0 4-Methoxyphenyl isothiocyanate 
• 1260243-04-6 ethyl 5-amino-1H-pyrazole-4-carboxylate 

Downstream Products

• 141300-19-8 5-Amino-6-(4-methoxy-phenylamino)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one 
• 141300-36-9 1H-pyrazolo<3,4-d><1,2,4>8H-triazolo<2,3-a>4H-pyrimidin-4-thione 
• 141300-29-0 8-(4-Methoxy-phenyl)-1,8-dihydro-pyrazolo[3,4-d][1,2,4]triazolo[1,5-a]pyrimidin-4-one 

Relevant academic research and scientific papers

Synthesis and pharmacological properties of pyrazolotriazolopyrimidine derivatives

As a part of research on anti-inflammatory-analgesic compounds, pyrazolotriazolopyrimidines were prepared by cycling the corresponding 2-phenylamino-3-aminopyrazolopyrimidin-4-one derivatives 3a-h with triethylorthoformate, in the presence of p-tol

New Pyrazol Derivatives. IV. Preparation and Cyclization of Some Acceptor-Substituted N-(Pyrazol-3-yl)-thioureas

3-Aminopyrazol-4-carboxylic acid derivatives (1,2) were transformed by reaction with different isothiocyanates R2NCS to N-(pyrazol-3-yl)-N'-substituted thioureas (5,6).Ethyl 3-amino-1-benzylpyrazol-4-carboxylate reacts with CSCl2 to form ethyl