5-Ethyl-1H-pyrazol-3-amine

Modify Date: 2025-08-29 18:30:22

5-Ethyl-1H-pyrazol-3-amine Structure
5-Ethyl-1H-pyrazol-3-amine structure
Common Name 5-Ethyl-1H-pyrazol-3-amine
CAS Number 1904-24-1 Molecular Weight 111.145
Density 1.2±0.1 g/cm3 Boiling Point 313.8±22.0 °C at 760 mmHg
Molecular Formula C5H9N3 Melting Point N/A
MSDS Chinese USA Flash Point 169.3±9.5 °C
Symbol GHS07
GHS07
Signal Word Warning

 Names

Name 3-Amino-5-ethyl-1H-pyrazole
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 313.8±22.0 °C at 760 mmHg
Molecular Formula C5H9N3
Molecular Weight 111.145
Flash Point 169.3±9.5 °C
Exact Mass 111.079643
PSA 54.70000
LogP 0.70
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.593

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302-H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Hazard Codes Xn
Risk Phrases 22-36/37/38
Safety Phrases 23-26-36/37/39
RIDADR NONH for all modes of transport
HS Code 2933199090

 Synthetic Route

~49%

5-Ethyl-1H-pyrazol-3-amine Structure

5-Ethyl-1H-pyra...

CAS#:1904-24-1

Literature: ASTRAZENECA AB; ASTRAZENECA UK LIMITED Patent: WO2007/99326 A1, 2007 ; Location in patent: Page/Page column 114 ; WO 2007/099326 A1

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5-Ethyl-1H-pyrazol-3-amine Structure

5-Ethyl-1H-pyra...

CAS#:1904-24-1

Literature: Chemical and Pharmaceutical Bulletin, , vol. 46, # 1 p. 69 - 78

 Customs

HS Code 2933199090
Summary 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

5-Amino-3-ethyl-1H-pyrazole
3-Ethyl-1H-pyrazol-5-amine
3-Amino-5-ethylpyrazole
5-Ethyl-1H-pyrazol-3-amine
3-Amino-5-ethyl-2H-pyrazole
1H-Pyrazol-3-amine, 5-ethyl-
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