Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 3H-Pyrazol-3-one,5-amino-2,4-dihydro-2-phenyl-
Price: ￥156.0/1g ￥396.0/10g ￥316.0/5g ￥76.0/250mg
Purity: 95.0%
Stocking Period: 1 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3H-Pyrazol-3-one,5-amino-2,4-dihydro-2-phenyl-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

4149-06-8

4149-06-8 structure

Name: 3H-Pyrazol-3-one,5-amino-2,4-dihydro-2-phenyl-
Chemical Name: 3-Amino-1-phenyl-2-pyrazolin-5-one
CAS Number: 4149-06-8
Molecular Formula: C₉H₉N₃O
Molecular Weight: 175.18700
Create Date: 2018-12-09 19:07:53
Modify Date: 2025-09-10 11:40:35

Name	3-Amino-1-phenyl-2-pyrazolin-5-one
Synonyms	3-Amino-1-phenyl-1H-pyrazol-5(4H)-one 5-Amino-2-phenyl-1,2-dihydro-3H-pyrazol-3-one MFCD00003137 EINECS 223-974-0

Density	1.34g/cm3
Boiling Point	312.3ºC at 760mmHg
Melting Point	210-215 °C (dec.)(lit.)
Molecular Formula	C₉H₉N₃O
Molecular Weight	175.18700
Flash Point	142.7ºC
Exact Mass	175.07500
PSA	58.69000
LogP	0.89640

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UR0393500

CHEMICAL NAME :: 3H-Pyrazol-3-one, 2,4-dihydro-5-amino-2-phenyl-

CAS REGISTRY NUMBER :: 4149-06-8

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C9-H9-N3-O

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >500 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CBCCT* "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. (National Academy of Science Library, 2101 Constitution Ave., NW, Washington, DC 20418) Volume(issue)/page/year: 5,340,1953

Hazard Codes	Xi: Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S37/39
WGK Germany	3
RTECS	UR0393500
HS Code	2933199090

79852-93-0

~75%

4149-06-8

Literature: Hyatt, John A.; Maggiulli, Cataldo A.; French, Stephen E. Journal of Heterocyclic Chemistry, 1983 , vol. 20, p. 773 - 774

2311-90-2

~73%

4149-06-8

Literature: Kim, Chang-Kyu; Zielinski, Paul A.; Maggiulli, Cataldo A. Journal of Organic Chemistry, 1984 , vol. 49, # 26 p. 5247 - 5250

74497-02-2

4149-06-8

Literature: Journal of Heterocyclic Chemistry, , vol. 20, p. 773 - 774

621-03-4

4149-06-8

Literature: Journal of Organic Chemistry, , vol. 49, # 26 p. 5247 - 5250

61239-31-4

4149-06-8

Literature: Journal of Organic Chemistry, , vol. 49, # 26 p. 5247 - 5250

84104-44-9

4149-06-8

Literature: Journal of Organic Chemistry, , vol. 49, # 26 p. 5247 - 5250

99365-97-6

4149-06-8

100-10-7

Literature: Journal fuer Praktische Chemie (Leipzig), , vol. 327, # 2 p. 209 - 219

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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