3-Methyl-1-phenyl-1H-pyrazol-5-amine

Modify Date: 2025-08-20 18:23:15

3-Methyl-1-phenyl-1H-pyrazol-5-amine Structure
3-Methyl-1-phenyl-1H-pyrazol-5-amine structure
Common Name 3-Methyl-1-phenyl-1H-pyrazol-5-amine
CAS Number 1131-18-6 Molecular Weight 173.214
Density 1.2±0.1 g/cm3 Boiling Point 333.0±22.0 °C at 760 mmHg
Molecular Formula C10H11N3 Melting Point 114-117 °C(lit.)
MSDS Chinese USA Flash Point 155.2±22.3 °C
Symbol GHS07
GHS07
Signal Word Warning

 Names

Name 5-Amino-3-methyl-1-phenylpyrazole
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 333.0±22.0 °C at 760 mmHg
Melting Point 114-117 °C(lit.)
Molecular Formula C10H11N3
Molecular Weight 173.214
Flash Point 155.2±22.3 °C
Exact Mass 173.095291
PSA 43.84000
LogP 1.96
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.625

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UQ4990000
CHEMICAL NAME :
1H-Pyrazole-5-amine, 3-methyl-1-phenyl-
CAS REGISTRY NUMBER :
1131-18-6
BEILSTEIN REFERENCE NO. :
0140666
LAST UPDATED :
199701
DATA ITEMS CITED :
5
MOLECULAR FORMULA :
C10-H11-N3
MOLECULAR WEIGHT :
173.24
WISWESSER LINE NOTATION :
T5NNJ AR& C1 EZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2500 mg/kg
TOXIC EFFECTS :
Behavioral - changes in motor activity (specific assay)
REFERENCE :
LONZA# Personal Communication from LONZA Ltd., CH-4002, Basel, Switzerland Volume(issue)/page/year: 03FEB1981
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1300 mg/kg
TOXIC EFFECTS :
Behavioral - hallucinations, distorted perceptions Behavioral - changes in motor activity (specific assay)
REFERENCE :
LONZA# Personal Communication from LONZA Ltd., CH-4002, Basel, Switzerland Volume(issue)/page/year: 03FEB1981
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FATOAO Farmakologiya i Toksikologiya (Moscow). For English translation, see PHTXA6 and RPTOAN. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.2- 1939- Volume(issue)/page/year: 27,295,1964
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Behavioral - changes in motor activity (specific assay) Behavioral - muscle contraction or spasticity
REFERENCE :
LONZA# Personal Communication from LONZA Ltd., CH-4002, Basel, Switzerland Volume(issue)/page/year: 03FEB1981

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi: Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S36
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS UQ4990000
HS Code 2933199090

 Synthetic Route

 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%

 Articles4

More Articles
Synthesis of Newly Substituted Pyrazoles and Substituted Pyrazolo [3, 4-b] Pyridines Based on 5-Amino-3-Methyl-1-Phenylpyrazole. El-Emary TI.

J. Chin. Chem. Soc. 54(2) , 507-518, (2007)

An unexpected chemical behavior of 5-N-(benzotriazol-1-ylmethyl) amino-3-tert-butyl-1-phenylpyrazole. Abonia R, et al.

Tetrahedron Lett. 43(22) , 5617-5620, (2002)

The synthesis of fused and pendant pyrazole heterocyclic compounds from 5-amino-3-methyl-1-phenylpyrazole and their evaluation as fluorescent brightening agents. Tagdiwala PV and Rangnekar DW.

J. Chem. Technol. Biotechnol. 38(2) , 77-84, (1987)

 Synonyms

5-methyl-2-phenylpyrazol-3-amine
1H-Pyrazol-5-amine, 3-methyl-1-phenyl-
5-AMINO-3-METHYL-1-PHENYLPYRAZOLE
MFCD00020727
T5NNJ AR& C1 EZ
3-Methyl-1-phenyl-1H-pyrazol-5-amine
EINECS 214-463-3
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