Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 5-Ethyl-1H-pyrazol-3-amine
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 5-Ethyl-1H-pyrazol-3-amine
Price: ￥620.0/250mg ￥1980.0/1g
Purity: 97.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3-Amino-5-ethyl-1H-pyrazole
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

1904-24-1

1904-24-1 structure

1904-24-1 structure

Name: 5-Ethyl-1H-pyrazol-3-amine
Chemical Name: 3-Amino-5-ethyl-1H-pyrazole
CAS Number: 1904-24-1
Molecular Formula: C₅H₉N₃
Molecular Weight: 111.145
Create Date: 2018-04-19 08:00:00
Modify Date: 2025-08-29 18:30:22

Name	3-Amino-5-ethyl-1H-pyrazole
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-

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

Symbol	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

33279-01-5 structure

33279-01-5

~49%

1904-24-1 structure

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

554-12-1 structure

554-12-1

75-05-8 structure

75-05-8

~%

1904-24-1 structure

1904-24-1

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

Precursor 3
33279-01-5 554-12-1 75-05-8
DownStream 0

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%

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