3-Amino-5-hydroxypyrazole

3-氨基-5-羟基吡唑

Also known as: 3-Amino-5-pyrazolone, 5-Amino-1,2-dihydro-3H-pyrazol-3-one, 5-Aminopyrazol-3-ol, 5-Amino-3-pyrazolone, 3-Amino-1H-pyrazol-5-ol, 3-Amino-1H-pyrazol-5(4H)-one, 5-Amino-3-hydroxypyrazole, 5-Hydroxy-3-aminopyrazole, 5-Amino-2,4-dihydro-3H-pyrazol-3-one, NSC 30480, NSC 34806, NSC 50565, EINECS 228-095-6, MFCD00022384

3-Amino-5-hydroxypyrazole (CAS 6126-22-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H5N3O and a molecular weight of 99.091 g/mol. It is also known as 3-Amino-5-pyrazolone, 5-Amino-1,2-dihydro-3H-pyrazol-3-one and 5-Aminopyrazol-3-ol. Key properties include a melting point of 214 °C (dec.)(lit.), a boiling point of 479.5±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 243.8±23.2 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6126-22-3

Jingsj CID

J-891400-2

Molecular Formula

C₃H₅N₃O

Chinese Name

3-氨基-5-羟基吡唑

Molecular Weight

99.091 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026