4-Isocyanato-5-methyl-1-phenyl-1H-pyrazole

4-异氰酸基-5-甲基-1-苯基-1H-吡唑

Also known as: 1H-Pyrazole,4-isocyanato-5-methyl-1-phenyl-, 4-Isocyanato-5-methyl-1-phenyl-1H-pyrazole 97%, 5-Methyl-1-phenyl-1H-pyrazol-4-yl isocyanate, 5-methyl-1-phenylpyrazol-4-isocyanate

4-Isocyanato-5-methyl-1-phenyl-1H-pyrazole (CAS 799283-97-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9N3O and a molecular weight of 199.20900 g/mol. It is also known as 1H-Pyrazole,4-isocyanato-5-methyl-1-phenyl-, 4-Isocyanato-5-methyl-1-phenyl-1H-pyrazole 97% and 5-Methyl-1-phenyl-1H-pyrazol-4-yl isocyanate. Key properties include a melting point of 56-60ºC, a boiling point of 314.4ºC at 760 mmHg, a density of 1.17g/cm3 and a flash point of 143.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

799283-97-9

Jingsj CID

J-994504-1

Molecular Formula

C₁₁H₉N₃O

Chinese Name

4-异氰酸基-5-甲基-1-苯基-1H-吡唑

Molecular Weight

199.20900 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026