MF:                  C₄H₆N₂

CAS No.:        1453-58-3

EINECS:         215-925-7

Physical and Chemical Properties

• Melting Point: 36.5 °C

• Boiling Point: 204 °C (lit.)

• Density: 1.02 g/mL at 25 °C (lit.)

• Vapor Pressure: 1.82 hPa at 20 °C

• Refractive Index: n²⁰/D 1.495 (lit.)

• Flash Point: 200 °F

• Solubility: Slightly soluble in DMSO; slightly soluble in methanol

Description

3-Methylpyrazole is a representative pyrazole heterocyclic compound with notable basicity and good reactivity. It is widely used in pharmaceutical synthesis, agrochemical development, and fine chemical industries.

Structure and Properties

The pyrazole ring in 3-methylpyrazole exhibits basic and nucleophilic characteristics, allowing it to function as an acid scavenger in organic synthesis. With a simple structure and mild reaction conditions, it shows good compatibility in various synthetic systems.

Applications

• Pharmaceutical chemistry:
  Used as a synthetic intermediate or acid scavenger

• Agrochemicals:
  Used as a nitrification inhibitor to regulate soil nitrification and improve nitrogen fertilizer efficiency

• Research and fine chemicals:
  Used in the synthesis of heterocyclic derivatives

Specifications