173448-04-9

Basic information

• Product Name: 2-methyl-4-(2-methyltetrazol-5-yl)pyrazol-3-amine
• Synonyms: 1H-pyrazol-5-amine, 1-methyl-4-(2-methyl-2H-tetrazol-5-yl)-; 1-Methyl-4-(2-methyl-2H-tetrazol-5-yl)-1H-pyrazol-5-amine
• CAS NO: 173448-04-9
• Molecular Formula: C₆H₉N₇
• Molecular Weight: 179.18
• Mol File: 173448-04-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 439.3°C at 760 mmHg
• Flash Point: 219.5°C
• Density: 1.66g/cm³
• Vapor Pressure: 6.47E-08mmHg at 25°C
• Refractive Index: 1.818
• CAS DataBase Reference: 2-methyl-4-(2-methyltetrazol-5-yl)pyrazol-3-amine(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methyl-4-(2-methyltetrazol-5-yl)pyrazol-3-amine(173448-04-9)
• EPA Substance Registry System: 2-methyl-4-(2-methyltetrazol-5-yl)pyrazol-3-amine(173448-04-9)

Safety Data

• Hazardous Substances Data: 173448-04-9(Hazardous Substances Data)

Upstream product

• 5334-41-8 5-amino-4-cyano-1-methylpyrazole 
• 77-78-1 dimethyl sulfate 

Relevant articles and documents

Preparation method and applications of azimsulfuron key intermediate

The present invention provides a preparation method of 1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfamide. The preparation method comprises that trimethyl orthoformate and malononitrile are adopted as starting raw materials, a three-step reaction is performed to obtain 1-methyl-5-amino-4-(tetrazole-5-yl)pyrazole, the 1-methyl-5-amino-4-(tetrazole-5-yl)pyrazole reacts with dimethylsulfate in the presence of an acid-binding agent to obtain 2-methyl-5-(1-methyl-5-amino-1H-pyrazole-4-yl)-2H-tetrazole, the 2-methyl-5-(1-methyl-5-amino-1H-pyrazole-4-yl)-2H-tetrazole is subjected to a sodium nitrite diazo-reaction under an acid condition, the obtained material reacts with a sodium sulfite-copper chloride-acetic acid mixture, and finally hydrolysis with ammonia is performed to obtain the target product. The present invention further provides a preparation method of azimsulfuron prepared from the 1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfamide. The preparation method of the present invention has characteristics of short reaction route, environmental protection raw materials, and high yield.