137811-92-8

Basic information

• Product Name: 4-nitro-3-pyrazolone hydrazinium salt
• Synonyms: 4-nitro-3-pyrazolone hydrazinium salt
• CAS NO: 137811-92-8
• Molecular Weight: 161.12
• Mol File: 137811-92-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4-nitro-3-pyrazolone hydrazinium salt(CAS DataBase Reference)
• NIST Chemistry Reference: 4-nitro-3-pyrazolone hydrazinium salt(137811-92-8)
• EPA Substance Registry System: 4-nitro-3-pyrazolone hydrazinium salt(137811-92-8)

Safety Data

• Hazardous Substances Data: 137811-92-8(Hazardous Substances Data)

Upstream product

• 137811-88-2 4-Methyl-6-nitro-2-phenyl-4H-pyrazolo[1,5-a]pyrimidin-7-one 
• 106087-65-4 6-Nitro-2-phenyl-4H-pyrazolo[1,5-a]pyrimidin-7-one 
• 137811-89-3 4-Methyl-6-nitro-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one 
• 103778-82-1 6-nitro-7-oxo-1,2,4-triazolo<1,5-a>pyrimidine 
• 106087-63-2 6-Nitro-4H-pyrazolo[1,5-a]pyrimidin-7-one 

Relevant articles and documents

NITROAZINES. 15. CONTRACTION OF THE PYRIMIDINE RING IN 6-NITROAZOLOPYRIMIDINES

It is shown that contraction of the pyrimidine ring occurs when 6-nitro-7-oxo-4,7-dihydroazolopyrimidines are heated with hydrazine hydrate.Complexes of 4-nitropyrazole with 5-aminoazoles, the structures of which were proved by x-ray diffraction analysis, are formed in a similar reaction of nitrosubstituted azolopyrimidines that do not contain an oxo function.